From 99ee1ad8a97e5391d783116aa7806180212f601f Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Wed, 30 Mar 2016 19:36:20 -0400
Subject: [PATCH] MC Dev fixes


diff --git a/src/main/java/net/minecraft/server/BiomeBase.java b/src/main/java/net/minecraft/server/BiomeBase.java
index 960dce230..253890e53 100644
--- a/src/main/java/net/minecraft/server/BiomeBase.java
+++ b/src/main/java/net/minecraft/server/BiomeBase.java
@@ -54,7 +54,7 @@ public abstract class BiomeBase {
 
     @Nullable
     public static BiomeBase a(BiomeBase biomebase) {
-        return (BiomeBase) BiomeBase.c.fromId(IRegistry.BIOME.a((Object) biomebase));
+        return (BiomeBase) BiomeBase.c.fromId(IRegistry.BIOME.a(biomebase)); // Paper - decompile fix
     }
 
     public static <C extends WorldGenCarverConfiguration> WorldGenCarverWrapper<C> a(WorldGenCarverAbstract<C> worldgencarverabstract, C c0) {
@@ -236,7 +236,7 @@ public abstract class BiomeBase {
 
     @Nullable
     public <C extends WorldGenFeatureConfiguration> C b(StructureGenerator<C> structuregenerator) {
-        return (WorldGenFeatureConfiguration) this.t.get(structuregenerator);
+        return (C) this.t.get(structuregenerator); // Paper - decompile fix
     }
 
     public List<WorldGenFeatureConfigured<?, ?>> g() {
diff --git a/src/main/java/net/minecraft/server/BlockDataAbstract.java b/src/main/java/net/minecraft/server/BlockDataAbstract.java
index ab03b5568..1cf97cefc 100644
--- a/src/main/java/net/minecraft/server/BlockDataAbstract.java
+++ b/src/main/java/net/minecraft/server/BlockDataAbstract.java
@@ -29,7 +29,7 @@ public abstract class BlockDataAbstract<O, S> implements IBlockDataHolder<S> {
         }
 
         private <T extends Comparable<T>> String a(IBlockState<T> iblockstate, Comparable<?> comparable) {
-            return iblockstate.a(comparable);
+            return iblockstate.a((T) comparable); // Paper - decompiler fix
         }
     };
     protected final O a;
@@ -42,11 +42,11 @@ public abstract class BlockDataAbstract<O, S> implements IBlockDataHolder<S> {
     }
 
     public <T extends Comparable<T>> S a(IBlockState<T> iblockstate) {
-        return this.set(iblockstate, (Comparable) a(iblockstate.getValues(), this.get(iblockstate)));
+        return this.set(iblockstate, a(iblockstate.getValues(), this.get(iblockstate))); // Paper - decompile fix
     }
 
     protected static <T> T a(Collection<T> collection, T t0) {
-        Iterator iterator = collection.iterator();
+        Iterator<T> iterator = collection.iterator(); // Paper - decompiler fix
 
         do {
             if (!iterator.hasNext()) {
@@ -89,7 +89,7 @@ public abstract class BlockDataAbstract<O, S> implements IBlockDataHolder<S> {
         if (comparable == null) {
             throw new IllegalArgumentException("Cannot get property " + iblockstate + " as it does not exist in " + this.a);
         } else {
-            return (Comparable) iblockstate.b().cast(comparable);
+            return iblockstate.b().cast(comparable); // Paper - decompiler fix
         }
     }
 
@@ -100,7 +100,7 @@ public abstract class BlockDataAbstract<O, S> implements IBlockDataHolder<S> {
         if (comparable == null) {
             throw new IllegalArgumentException("Cannot set property " + iblockstate + " as it does not exist in " + this.a);
         } else if (comparable == v0) {
-            return this;
+            return (S) this; // Paper - decompiler fix
         } else {
             S s0 = this.e.get(iblockstate, v0);
 
diff --git a/src/main/java/net/minecraft/server/BlockPosition.java b/src/main/java/net/minecraft/server/BlockPosition.java
index e40f9c153..c88a62f6b 100644
--- a/src/main/java/net/minecraft/server/BlockPosition.java
+++ b/src/main/java/net/minecraft/server/BlockPosition.java
@@ -57,12 +57,12 @@ public class BlockPosition extends BaseBlockPosition implements MinecraftSeriali
         OfInt ofint = dynamic.asIntStream().spliterator();
         int[] aint = new int[3];
 
-        if (ofint.tryAdvance((i) -> {
+        if (ofint.tryAdvance((Consumer<? super Integer>) (i) -> { // Paper - decomile fix
             aint[0] = i;
-        }) && ofint.tryAdvance((i) -> {
+        }) && ofint.tryAdvance((Consumer<? super Integer>) (i) -> { // Paper - decompile fix
             aint[1] = i;
         })) {
-            ofint.tryAdvance((i) -> {
+            ofint.tryAdvance((Consumer<? super Integer>) (i) -> { // Paper - decompile fix
                 aint[2] = i;
             });
         }
diff --git a/src/main/java/net/minecraft/server/BlockStateEnum.java b/src/main/java/net/minecraft/server/BlockStateEnum.java
index 28cfbaae2..1486d460c 100644
--- a/src/main/java/net/minecraft/server/BlockStateEnum.java
+++ b/src/main/java/net/minecraft/server/BlockStateEnum.java
@@ -20,10 +20,10 @@ public class BlockStateEnum<T extends Enum<T> & INamable> extends BlockState<T>
     protected BlockStateEnum(String s, Class<T> oclass, Collection<T> collection) {
         super(s, oclass);
         this.a = ImmutableSet.copyOf(collection);
-        Iterator iterator = collection.iterator();
+        Iterator<T> iterator = collection.iterator(); // Paper - decompile fix
 
         while (iterator.hasNext()) {
-            T t0 = (Enum) iterator.next();
+            T t0 = iterator.next(); // Paper - Decompile fix
             String s1 = ((INamable) t0).getName();
 
             if (this.b.containsKey(s1)) {
diff --git a/src/main/java/net/minecraft/server/ChunkStatus.java b/src/main/java/net/minecraft/server/ChunkStatus.java
index 68a601bac..efdf611e6 100644
--- a/src/main/java/net/minecraft/server/ChunkStatus.java
+++ b/src/main/java/net/minecraft/server/ChunkStatus.java
@@ -84,7 +84,7 @@ public class ChunkStatus {
         return (CompletableFuture) function.apply(ichunkaccess);
     });
     private static final List<ChunkStatus> q = ImmutableList.of(ChunkStatus.FULL, ChunkStatus.FEATURES, ChunkStatus.LIQUID_CARVERS, ChunkStatus.STRUCTURE_STARTS, ChunkStatus.STRUCTURE_STARTS, ChunkStatus.STRUCTURE_STARTS, ChunkStatus.STRUCTURE_STARTS, ChunkStatus.STRUCTURE_STARTS, ChunkStatus.STRUCTURE_STARTS, ChunkStatus.STRUCTURE_STARTS, ChunkStatus.STRUCTURE_STARTS);
-    private static final IntList r = (IntList) SystemUtils.a((Object) (new IntArrayList(a().size())), (intarraylist) -> {
+    private static final IntList r = (IntList) SystemUtils.a((new IntArrayList(a().size())), (java.util.function.Consumer<IntArrayList>)(IntArrayList intarraylist) -> { // Paper - decompile fix
         int i = 0;
 
         for (int j = a().size() - 1; j >= 0; --j) {
diff --git a/src/main/java/net/minecraft/server/CraftingManager.java b/src/main/java/net/minecraft/server/CraftingManager.java
index 2dd27edc8..6def3616e 100644
--- a/src/main/java/net/minecraft/server/CraftingManager.java
+++ b/src/main/java/net/minecraft/server/CraftingManager.java
@@ -58,7 +58,7 @@ public class CraftingManager extends ResourceDataJson {
         }
 
         this.recipes = (Map) map1.entrySet().stream().collect(ImmutableMap.toImmutableMap(Entry::getKey, (entry1) -> {
-            return (entry1.getValue()); // CraftBukkit
+            return entry1.getValue(); // CraftBukkit // Paper - decompile fix - *shrugs internally*
         }));
         CraftingManager.LOGGER.info("Loaded {} recipes", map1.size());
     }
diff --git a/src/main/java/net/minecraft/server/EnderDragonBattle.java b/src/main/java/net/minecraft/server/EnderDragonBattle.java
index f2c0e06ba..909d13c42 100644
--- a/src/main/java/net/minecraft/server/EnderDragonBattle.java
+++ b/src/main/java/net/minecraft/server/EnderDragonBattle.java
@@ -376,7 +376,7 @@ public class EnderDragonBattle {
 
     private void a(BlockPosition blockposition) {
         this.d.triggerEffect(3000, blockposition, 0);
-        WorldGenerator.END_GATEWAY.b((WorldGenFeatureConfiguration) WorldGenEndGatewayConfiguration.a()).a(this.d, this.d.getChunkProvider().getChunkGenerator(), new Random(), blockposition);
+        WorldGenerator.END_GATEWAY.b(WorldGenEndGatewayConfiguration.a()).a(this.d, this.d.getChunkProvider().getChunkGenerator(), new Random(), blockposition); // Paper - decompile fix
     }
 
     private void a(boolean flag) {
@@ -388,7 +388,7 @@ public class EnderDragonBattle {
             }
         }
 
-        worldgenendtrophy.b((WorldGenFeatureConfiguration) WorldGenFeatureConfiguration.e).a(this.d, this.d.getChunkProvider().getChunkGenerator(), new Random(), this.o);
+        worldgenendtrophy.b(WorldGenFeatureConfiguration.e).a(this.d, this.d.getChunkProvider().getChunkGenerator(), new Random(), this.o); // Paper - decompile fix
     }
 
     private EntityEnderDragon o() {
diff --git a/src/main/java/net/minecraft/server/EntityFireballFireball.java b/src/main/java/net/minecraft/server/EntityFireballFireball.java
index 8e28c4725..3988e68d4 100644
--- a/src/main/java/net/minecraft/server/EntityFireballFireball.java
+++ b/src/main/java/net/minecraft/server/EntityFireballFireball.java
@@ -18,7 +18,7 @@ public abstract class EntityFireballFireball extends EntityFireball {
 
     public void b(ItemStack itemstack) {
         if (itemstack.getItem() != Items.FIRE_CHARGE || itemstack.hasTag()) {
-            this.getDataWatcher().set(EntityFireballFireball.f, SystemUtils.a((Object) itemstack.cloneItemStack(), (itemstack1) -> {
+            this.getDataWatcher().set(EntityFireballFireball.f, SystemUtils.a(itemstack.cloneItemStack(), (itemstack1) -> { // Paper - decompile fix
                 itemstack1.setCount(1);
             }));
         }
diff --git a/src/main/java/net/minecraft/server/EntityVindicator.java b/src/main/java/net/minecraft/server/EntityVindicator.java
index 7d44348c7..73ecdd22e 100644
--- a/src/main/java/net/minecraft/server/EntityVindicator.java
+++ b/src/main/java/net/minecraft/server/EntityVindicator.java
@@ -25,7 +25,7 @@ public class EntityVindicator extends EntityIllagerAbstract {
         this.goalSelector.a(2, new EntityIllagerAbstract.b(this));
         this.goalSelector.a(3, new EntityRaider.a(this, 10.0F));
         this.goalSelector.a(4, new EntityVindicator.c(this));
-        this.targetSelector.a(1, (new PathfinderGoalHurtByTarget(this, new Class[]{EntityRaider.class})).a());
+        this.targetSelector.a(1, (new PathfinderGoalHurtByTarget(this, new Class[]{EntityRaider.class})).a(new Class[0])); // Paper - decompile fix
         this.targetSelector.a(2, new PathfinderGoalNearestAttackableTarget<>(this, EntityHuman.class, true));
         this.targetSelector.a(3, new PathfinderGoalNearestAttackableTarget<>(this, EntityVillagerAbstract.class, true));
         this.targetSelector.a(3, new PathfinderGoalNearestAttackableTarget<>(this, EntityIronGolem.class, true));
diff --git a/src/main/java/net/minecraft/server/IAsyncTaskHandler.java b/src/main/java/net/minecraft/server/IAsyncTaskHandler.java
index 1f3ea23ae..b098d86e3 100644
--- a/src/main/java/net/minecraft/server/IAsyncTaskHandler.java
+++ b/src/main/java/net/minecraft/server/IAsyncTaskHandler.java
@@ -55,7 +55,7 @@ public abstract class IAsyncTaskHandler<R extends Runnable> implements Mailbox<R
             return this.executeFuture(runnable);
         } else {
             runnable.run();
-            return CompletableFuture.completedFuture((Object) null);
+            return CompletableFuture.completedFuture(null); // Paper - decompile fix
         }
     }
 
@@ -90,14 +90,14 @@ public abstract class IAsyncTaskHandler<R extends Runnable> implements Mailbox<R
     }
 
     protected boolean executeNext() {
-        R r0 = (Runnable) this.d.peek();
+        R r0 = this.d.peek(); // Paper - decompile fix
 
         if (r0 == null) {
             return false;
         } else if (this.e == 0 && !this.canExecute(r0)) {
             return false;
         } else {
-            this.executeTask((Runnable) this.d.remove());
+            this.executeTask(this.d.remove()); // Paper - decompile fix
             return true;
         }
     }
diff --git a/src/main/java/net/minecraft/server/IBlockData.java b/src/main/java/net/minecraft/server/IBlockData.java
index 3be9efd22..3a1ad2346 100644
--- a/src/main/java/net/minecraft/server/IBlockData.java
+++ b/src/main/java/net/minecraft/server/IBlockData.java
@@ -281,12 +281,12 @@ public class IBlockData extends BlockDataAbstract<Block, IBlockData> implements
 
     public static <T> Dynamic<T> a(DynamicOps<T> dynamicops, IBlockData iblockdata) {
         ImmutableMap<IBlockState<?>, Comparable<?>> immutablemap = iblockdata.getStateMap();
-        Object object;
+        T object; // Paper - decompile fix
 
         if (immutablemap.isEmpty()) {
             object = dynamicops.createMap(ImmutableMap.of(dynamicops.createString("Name"), dynamicops.createString(IRegistry.BLOCK.getKey(iblockdata.getBlock()).toString())));
         } else {
-            object = dynamicops.createMap(ImmutableMap.of(dynamicops.createString("Name"), dynamicops.createString(IRegistry.BLOCK.getKey(iblockdata.getBlock()).toString()), dynamicops.createString("Properties"), dynamicops.createMap((Map) immutablemap.entrySet().stream().map((entry) -> {
+            object = dynamicops.createMap(ImmutableMap.of(dynamicops.createString("Name"), dynamicops.createString(IRegistry.BLOCK.getKey(iblockdata.getBlock()).toString()), dynamicops.createString("Properties"), dynamicops.createMap(immutablemap.entrySet().stream().map((entry) -> { // Paper - decompile fix
                 return Pair.of(dynamicops.createString(((IBlockState) entry.getKey()).a()), dynamicops.createString(IBlockDataHolder.b((IBlockState) entry.getKey(), (Comparable) entry.getValue())));
             }).collect(Collectors.toMap(Pair::getFirst, Pair::getSecond)))));
         }
@@ -348,9 +348,9 @@ public class IBlockData extends BlockDataAbstract<Block, IBlockData> implements
             if (!iblockdata.o()) {
                 this.f = null;
             } else {
-                this.f = new VoxelShape[IBlockData.a.a.length];
+                this.f = new VoxelShape[a.length]; // Paper - decompile fix
                 VoxelShape voxelshape = block.i(iblockdata, BlockAccessAir.INSTANCE, BlockPosition.ZERO);
-                EnumDirection[] aenumdirection = IBlockData.a.a;
+                EnumDirection[] aenumdirection = a; // Paper - decompile fix
 
                 i = aenumdirection.length;
 
@@ -366,7 +366,7 @@ public class IBlockData extends BlockDataAbstract<Block, IBlockData> implements
                 return this.g.b(enumdirection_enumaxis) < 0.0D || this.g.c(enumdirection_enumaxis) > 1.0D;
             });
             this.i = new boolean[6];
-            EnumDirection[] aenumdirection1 = IBlockData.a.a;
+            EnumDirection[] aenumdirection1 = a; // Paper - decompile fix
             int k = aenumdirection1.length;
 
             for (i = 0; i < k; ++i) {
diff --git a/src/main/java/net/minecraft/server/IEntityAccess.java b/src/main/java/net/minecraft/server/IEntityAccess.java
index a2bbca22b..c8512f9f4 100644
--- a/src/main/java/net/minecraft/server/IEntityAccess.java
+++ b/src/main/java/net/minecraft/server/IEntityAccess.java
@@ -47,7 +47,7 @@ public interface IEntityAccess {
             return Stream.empty();
         } else {
             AxisAlignedBB axisalignedbb1 = axisalignedbb.g(1.0E-7D);
-            Stream stream = this.getEntities(entity, axisalignedbb1).stream().filter((entity1) -> {
+            Stream<AxisAlignedBB> stream = this.getEntities(entity, axisalignedbb1).stream().filter((entity1) -> { // Paper - decompile fix
                 return !set.contains(entity1);
             }).filter((entity1) -> {
                 return entity == null || !entity.x(entity1);
@@ -55,7 +55,6 @@ public interface IEntityAccess {
                 return Stream.of(entity1.au(), entity == null ? null : entity.j(entity1));
             }).filter(Objects::nonNull);
 
-            axisalignedbb1.getClass();
             return stream.filter(axisalignedbb1::c).map(VoxelShapes::a);
         }
     }
@@ -157,22 +156,22 @@ public interface IEntityAccess {
 
     @Nullable
     default <T extends EntityLiving> T a(Class<? extends T> oclass, PathfinderTargetCondition pathfindertargetcondition, @Nullable EntityLiving entityliving, double d0, double d1, double d2, AxisAlignedBB axisalignedbb) {
-        return this.a(this.a(oclass, axisalignedbb, (Predicate) null), pathfindertargetcondition, entityliving, d0, d1, d2);
+        return this.a(this.a(oclass, axisalignedbb, null), pathfindertargetcondition, entityliving, d0, d1, d2); // Paper - decompile fix
     }
 
     @Nullable
     default <T extends EntityLiving> T b(Class<? extends T> oclass, PathfinderTargetCondition pathfindertargetcondition, @Nullable EntityLiving entityliving, double d0, double d1, double d2, AxisAlignedBB axisalignedbb) {
-        return this.a(this.b(oclass, axisalignedbb, (Predicate) null), pathfindertargetcondition, entityliving, d0, d1, d2);
+        return this.a(this.b(oclass, axisalignedbb, null), pathfindertargetcondition, entityliving, d0, d1, d2); // Paper - decompile fix
     }
 
     @Nullable
     default <T extends EntityLiving> T a(List<? extends T> list, PathfinderTargetCondition pathfindertargetcondition, @Nullable EntityLiving entityliving, double d0, double d1, double d2) {
         double d3 = -1.0D;
         T t0 = null;
-        Iterator iterator = list.iterator();
+        Iterator<? extends T> iterator = list.iterator(); // Paper - decompile fix
 
         while (iterator.hasNext()) {
-            T t1 = (EntityLiving) iterator.next();
+            T t1 = iterator.next(); // Paper - decompile fix
 
             if (pathfindertargetcondition.a(entityliving, t1)) {
                 double d4 = t1.g(d0, d1, d2);
@@ -205,10 +204,10 @@ public interface IEntityAccess {
     default <T extends EntityLiving> List<T> a(Class<? extends T> oclass, PathfinderTargetCondition pathfindertargetcondition, EntityLiving entityliving, AxisAlignedBB axisalignedbb) {
         List<T> list = this.a(oclass, axisalignedbb, (Predicate) null);
         List<T> list1 = Lists.newArrayList();
-        Iterator iterator = list.iterator();
+        Iterator<T> iterator = list.iterator(); // Paper - decompile fix
 
         while (iterator.hasNext()) {
-            T t0 = (EntityLiving) iterator.next();
+            T t0 = iterator.next(); // Paper - decompile fix
 
             if (pathfindertargetcondition.a(entityliving, t0)) {
                 list1.add(t0);
diff --git a/src/main/java/net/minecraft/server/IOWorker.java b/src/main/java/net/minecraft/server/IOWorker.java
index a986f2912..c5658c077 100644
--- a/src/main/java/net/minecraft/server/IOWorker.java
+++ b/src/main/java/net/minecraft/server/IOWorker.java
@@ -46,7 +46,7 @@ public class IOWorker implements AutoCloseable {
                     if (throwable != null) {
                         completablefuture.completeExceptionally(throwable);
                     } else {
-                        completablefuture.complete((Object) null);
+                        completablefuture.complete(null); // Paper - Decompile fix
                     }
 
                 });
@@ -106,7 +106,7 @@ public class IOWorker implements AutoCloseable {
                 }));
 
                 completablefuture1.whenComplete((object, throwable) -> {
-                    completablefuture.complete((Object) null);
+                    completablefuture.complete(null); // Paper - decompile fix
                 });
             };
         });
@@ -165,7 +165,7 @@ public class IOWorker implements AutoCloseable {
     private void a(ChunkCoordIntPair chunkcoordintpair, IOWorker.a ioworker_a) {
         try {
             this.e.write(chunkcoordintpair, ioworker_a.a);
-            ioworker_a.b.complete((Object) null);
+            ioworker_a.b.complete(null); // Paper - decompile fix
         } catch (Exception exception) {
             IOWorker.LOGGER.error("Failed to store chunk {}", chunkcoordintpair, exception);
             ioworker_a.b.completeExceptionally(exception);
@@ -176,7 +176,7 @@ public class IOWorker implements AutoCloseable {
     private void g() {
         try {
             this.e.close();
-            this.h.complete((Object) null);
+            this.h.complete(null); // Paper - decompile fix
         } catch (Exception exception) {
             IOWorker.LOGGER.error("Failed to close storage", exception);
             this.h.completeExceptionally(exception);
diff --git a/src/main/java/net/minecraft/server/LootSelectorEntry.java b/src/main/java/net/minecraft/server/LootSelectorEntry.java
index 59bb53543..3ed6a1e78 100644
--- a/src/main/java/net/minecraft/server/LootSelectorEntry.java
+++ b/src/main/java/net/minecraft/server/LootSelectorEntry.java
@@ -125,7 +125,7 @@ public abstract class LootSelectorEntry extends LootEntryAbstract {
         @Override
         public T b(LootItemFunction.a lootitemfunction_a) {
             this.c.add(lootitemfunction_a.b());
-            return (LootSelectorEntry.a) this.d();
+            return this.d(); // Paper - decompile fix
         }
 
         protected LootItemFunction[] a() {
@@ -134,12 +134,12 @@ public abstract class LootSelectorEntry extends LootEntryAbstract {
 
         public T a(int i) {
             this.a = i;
-            return (LootSelectorEntry.a) this.d();
+            return this.d(); // Paper - decompile fix
         }
 
         public T b(int i) {
             this.b = i;
-            return (LootSelectorEntry.a) this.d();
+            return this.d(); // Paper - decompile fix
         }
     }
 
diff --git a/src/main/java/net/minecraft/server/NBTBase.java b/src/main/java/net/minecraft/server/NBTBase.java
index 829a7ae0a..8b9e47b4c 100644
--- a/src/main/java/net/minecraft/server/NBTBase.java
+++ b/src/main/java/net/minecraft/server/NBTBase.java
@@ -18,7 +18,7 @@ public interface NBTBase {
 
     NBTTagType<?> b();
 
-    NBTBase clone();
+    public NBTBase clone(); // Paper - decompile fix
 
     default String asString() {
         return this.toString();
diff --git a/src/main/java/net/minecraft/server/NBTTagList.java b/src/main/java/net/minecraft/server/NBTTagList.java
index 22035b6c0..5406f4c40 100644
--- a/src/main/java/net/minecraft/server/NBTTagList.java
+++ b/src/main/java/net/minecraft/server/NBTTagList.java
@@ -51,7 +51,7 @@ public class NBTTagList extends NBTList<NBTBase> {
             return "TAG_List";
         }
     };
-    private static final ByteSet b = new ByteOpenHashSet(Arrays.asList(1, 2, 3, 4, 5, 6));
+    private static final ByteSet b = new ByteOpenHashSet(Arrays.asList((byte) 1, (byte) 2, (byte) 3, (byte) 4, (byte) 5, (byte) 6)); // Paper - decompiler fix
     private final List<NBTBase> list;
     private byte type;
 
diff --git a/src/main/java/net/minecraft/server/NextTickListEntry.java b/src/main/java/net/minecraft/server/NextTickListEntry.java
index 8471920b8..e9c405fb5 100644
--- a/src/main/java/net/minecraft/server/NextTickListEntry.java
+++ b/src/main/java/net/minecraft/server/NextTickListEntry.java
@@ -37,13 +37,13 @@ public class NextTickListEntry<T> {
         return this.a.hashCode();
     }
 
-    public static <T> Comparator<NextTickListEntry<T>> a() {
+    public static <T> Comparator<Object> a() { // Paper - decompile fix
         return Comparator.comparingLong((nextticklistentry) -> {
-            return nextticklistentry.b;
+            return ((NextTickListEntry<T>) nextticklistentry).b; // Paper - decompile fix
         }).thenComparing((nextticklistentry) -> {
-            return nextticklistentry.c;
+            return ((NextTickListEntry<T>) nextticklistentry).c; // Paper - decompile fix
         }).thenComparingLong((nextticklistentry) -> {
-            return nextticklistentry.f;
+            return ((NextTickListEntry<T>) nextticklistentry).f; // Paper - decompile fix
         });
     }
 
diff --git a/src/main/java/net/minecraft/server/RegionFileSection.java b/src/main/java/net/minecraft/server/RegionFileSection.java
index 737afc7d7..db9f0196b 100644
--- a/src/main/java/net/minecraft/server/RegionFileSection.java
+++ b/src/main/java/net/minecraft/server/RegionFileSection.java
@@ -83,9 +83,9 @@ public class RegionFileSection<R extends MinecraftSerializable> implements AutoC
         Optional<R> optional = this.d(i);
 
         if (optional.isPresent()) {
-            return (MinecraftSerializable) optional.get();
+            return optional.get(); // Paper - decompile fix
         } else {
-            R r0 = (MinecraftSerializable) this.f.apply(() -> {
+            R r0 =  this.f.apply(() -> { // Paper - decompile fix
                 this.a(i);
             });
 
@@ -124,7 +124,7 @@ public class RegionFileSection<R extends MinecraftSerializable> implements AutoC
             for (int l = 0; l < 16; ++l) {
                 long i1 = SectionPosition.a(chunkcoordintpair, l).v();
                 Optional<R> optional = optionaldynamic.get(Integer.toString(l)).get().map((dynamic2) -> {
-                    return (MinecraftSerializable) this.e.apply(() -> {
+                    return this.e.apply(() -> { // Paper - decompile fix
                         this.a(i1);
                     }, dynamic2);
                 });
diff --git a/src/main/java/net/minecraft/server/RegistryBlockID.java b/src/main/java/net/minecraft/server/RegistryBlockID.java
index 7f89562e9..4efcb8b59 100644
--- a/src/main/java/net/minecraft/server/RegistryBlockID.java
+++ b/src/main/java/net/minecraft/server/RegistryBlockID.java
@@ -27,7 +27,7 @@ public class RegistryBlockID<T> implements Registry<T> {
         this.b.put(t0, i);
 
         while (this.c.size() <= i) {
-            this.c.add((Object) null);
+            this.c.add(null); // Paper - decompile fix
         }
 
         this.c.set(i, t0);
diff --git a/src/main/java/net/minecraft/server/RegistryID.java b/src/main/java/net/minecraft/server/RegistryID.java
index 4cb78c6a3..e15d28671 100644
--- a/src/main/java/net/minecraft/server/RegistryID.java
+++ b/src/main/java/net/minecraft/server/RegistryID.java
@@ -17,9 +17,9 @@ public class RegistryID<K> implements Registry<K> {
 
     public RegistryID(int i) {
         i = (int) ((float) i / 0.8F);
-        this.b = (Object[]) (new Object[i]);
+        this.b = (K[]) (new Object[i]); // Paper - decompile fix
         this.c = new int[i];
-        this.d = (Object[]) (new Object[i]);
+        this.d = (K[]) (new Object[i]); // Paper - decompile fix
     }
 
     public int getId(@Nullable K k0) {
@@ -55,9 +55,9 @@ public class RegistryID<K> implements Registry<K> {
         K[] ak = this.b;
         int[] aint = this.c;
 
-        this.b = (Object[]) (new Object[i]);
+        this.b = (K[]) (new Object[i]); // Paper - decompile fix
         this.c = new int[i];
-        this.d = (Object[]) (new Object[i]);
+        this.d = (K[]) (new Object[i]); // Paper - decompile fix
         this.e = 0;
         this.f = 0;
 
diff --git a/src/main/java/net/minecraft/server/SystemUtils.java b/src/main/java/net/minecraft/server/SystemUtils.java
index 8534585eb..7b92ecfff 100644
--- a/src/main/java/net/minecraft/server/SystemUtils.java
+++ b/src/main/java/net/minecraft/server/SystemUtils.java
@@ -45,8 +45,8 @@ public class SystemUtils {
         return Collectors.toMap(Entry::getKey, Entry::getValue);
     }
 
-    public static <T extends Comparable<T>> String a(IBlockState<T> iblockstate, Object object) {
-        return iblockstate.a((Comparable) object);
+    public static <T extends Comparable<T>> String a(IBlockState<T> iblockstate, T object) { // Paper - decompile fix
+        return iblockstate.a(object); // Paper - decompile fix
     }
 
     public static String a(String s, @Nullable MinecraftKey minecraftkey) {
@@ -168,8 +168,8 @@ public class SystemUtils {
     public static <T> T b(Iterable<T> iterable, @Nullable T t0) {
         Iterator<T> iterator = iterable.iterator();
 
-        Object object;
-        Object object1;
+        T object; // Paper - decompile fix
+        T object1; // Paper - decompile fix
 
         for (object1 = null; iterator.hasNext(); object1 = object) {
             object = iterator.next();
@@ -194,7 +194,7 @@ public class SystemUtils {
     }
 
     public static <K> Strategy<K> i() {
-        return SystemUtils.IdentityHashingStrategy.INSTANCE;
+        return (Strategy<K>) SystemUtils.IdentityHashingStrategy.INSTANCE; // Paper - decompile fix
     }
 
     public static <V> CompletableFuture<List<V>> b(List<? extends CompletableFuture<? extends V>> list) {
@@ -205,7 +205,7 @@ public class SystemUtils {
         list.forEach((completablefuture1) -> {
             int i = list1.size();
 
-            list1.add((Object) null);
+            list1.add(null); // Paper - decompile fix
             acompletablefuture[i] = completablefuture1.whenComplete((object, throwable) -> {
                 if (throwable != null) {
                     completablefuture.completeExceptionally(throwable);
diff --git a/src/main/java/net/minecraft/server/Ticket.java b/src/main/java/net/minecraft/server/Ticket.java
index ee2059cf8..77bb6b092 100644
--- a/src/main/java/net/minecraft/server/Ticket.java
+++ b/src/main/java/net/minecraft/server/Ticket.java
@@ -23,7 +23,7 @@ public final class Ticket<T> implements Comparable<Ticket<?>> {
         } else {
             int j = Integer.compare(System.identityHashCode(this.a), System.identityHashCode(ticket.a));
 
-            return j != 0 ? j : this.a.a().compare(this.identifier, ticket.identifier);
+            return j != 0 ? j : this.a.a().compare(this.identifier, (T)ticket.identifier); // Paper - decompile fix
         }
     }
 
diff --git a/src/main/java/net/minecraft/server/VillagePlace.java b/src/main/java/net/minecraft/server/VillagePlace.java
index c137484f6..c999f8c9b 100644
--- a/src/main/java/net/minecraft/server/VillagePlace.java
+++ b/src/main/java/net/minecraft/server/VillagePlace.java
@@ -165,7 +165,7 @@ public class VillagePlace extends RegionFileSection<VillagePlaceSection> {
     }
 
     private static boolean a(ChunkSection chunksection) {
-        Stream stream = VillagePlaceType.e();
+        Stream<IBlockData> stream = VillagePlaceType.e(); // Paper - decompile fix
 
         chunksection.getClass();
         return stream.anyMatch(chunksection::a);
@@ -185,7 +185,7 @@ public class VillagePlace extends RegionFileSection<VillagePlaceSection> {
         SectionPosition.b(new ChunkCoordIntPair(blockposition), Math.floorDiv(i, 16)).map((sectionposition) -> {
             return Pair.of(sectionposition, this.d(sectionposition.v()));
         }).filter((pair) -> {
-            return !(Boolean) ((Optional) pair.getSecond()).map(VillagePlaceSection::a).orElse(false);
+            return !(Boolean) (pair.getSecond()).map(VillagePlaceSection::a).orElse(false); // Paper - decompile fix
         }).map((pair) -> {
             return ((SectionPosition) pair.getFirst()).u();
         }).filter((chunkcoordintpair) -> {
@@ -237,7 +237,7 @@ public class VillagePlace extends RegionFileSection<VillagePlaceSection> {
 
         private final Predicate<? super VillagePlaceRecord> d;
 
-        private Occupancy(Predicate predicate) {
+        private Occupancy(Predicate<? super VillagePlaceRecord> predicate) { // Paper - decompile fix
             this.d = predicate;
         }
 
diff --git a/src/main/java/net/minecraft/server/VillagerTrades.java b/src/main/java/net/minecraft/server/VillagerTrades.java
index a06a31534..3bcf0b385 100644
--- a/src/main/java/net/minecraft/server/VillagerTrades.java
+++ b/src/main/java/net/minecraft/server/VillagerTrades.java
@@ -15,12 +15,12 @@ import javax.annotation.Nullable;
 
 public class VillagerTrades {
 
-    public static final Map<VillagerProfession, Int2ObjectMap<VillagerTrades.IMerchantRecipeOption[]>> a = (Map) SystemUtils.a((Object) Maps.newHashMap(), (hashmap) -> {
+    public static final Map<VillagerProfession, Int2ObjectMap<VillagerTrades.IMerchantRecipeOption[]>> a = SystemUtils.a(Maps.newHashMap(), (hashmap) -> { // Paper - decompile fix
         hashmap.put(VillagerProfession.FARMER, a(ImmutableMap.of(1, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.WHEAT, 20, 16, 2), new VillagerTrades.b(Items.POTATO, 26, 16, 2), new VillagerTrades.b(Items.CARROT, 22, 16, 2), new VillagerTrades.b(Items.BEETROOT, 15, 16, 2), new VillagerTrades.h(Items.BREAD, 1, 6, 16, 1)}, 2, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Blocks.PUMPKIN, 6, 12, 10), new VillagerTrades.h(Items.PUMPKIN_PIE, 1, 4, 5), new VillagerTrades.h(Items.APPLE, 1, 4, 16, 5)}, 3, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.h(Items.COOKIE, 3, 18, 10), new VillagerTrades.b(Blocks.MELON, 4, 12, 20)}, 4, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.h(Blocks.CAKE, 1, 1, 12, 15), new VillagerTrades.i(MobEffects.NIGHT_VISION, 100, 15), new VillagerTrades.i(MobEffects.JUMP, 160, 15), new VillagerTrades.i(MobEffects.WEAKNESS, 140, 15), new VillagerTrades.i(MobEffects.BLINDNESS, 120, 15), new VillagerTrades.i(MobEffects.POISON, 280, 15), new VillagerTrades.i(MobEffects.SATURATION, 7, 15)}, 5, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.h(Items.GOLDEN_CARROT, 3, 3, 30), new VillagerTrades.h(Items.GLISTERING_MELON_SLICE, 4, 3, 30)})));
-        hashmap.put(VillagerProfession.FISHERMAN, a(ImmutableMap.of(1, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.STRING, 20, 16, 2), new VillagerTrades.b(Items.COAL, 10, 16, 2), new VillagerTrades.g(Items.COD, 6, Items.COOKED_COD, 6, 16, 1), new VillagerTrades.h(Items.COD_BUCKET, 3, 1, 16, 1)}, 2, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.COD, 15, 16, 10), new VillagerTrades.g(Items.SALMON, 6, Items.COOKED_SALMON, 6, 16, 5), new VillagerTrades.h(Items.pT, 2, 1, 5)}, 3, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.SALMON, 13, 16, 20), new VillagerTrades.e(Items.FISHING_ROD, 3, 3, 10, 0.2F)}, 4, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.TROPICAL_FISH, 6, 12, 30)}, 5, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.PUFFERFISH, 4, 12, 30), new VillagerTrades.c(1, 12, 30, ImmutableMap.builder().put(VillagerType.PLAINS, Items.OAK_BOAT).put(VillagerType.TAIGA, Items.SPRUCE_BOAT).put(VillagerType.SNOW, Items.SPRUCE_BOAT).put(VillagerType.DESERT, Items.JUNGLE_BOAT).put(VillagerType.JUNGLE, Items.JUNGLE_BOAT).put(VillagerType.SAVANNA, Items.ACACIA_BOAT).put(VillagerType.SWAMP, Items.DARK_OAK_BOAT).build())})));
+        hashmap.put(VillagerProfession.FISHERMAN, a(ImmutableMap.of(1, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.STRING, 20, 16, 2), new VillagerTrades.b(Items.COAL, 10, 16, 2), new VillagerTrades.g(Items.COD, 6, Items.COOKED_COD, 6, 16, 1), new VillagerTrades.h(Items.COD_BUCKET, 3, 1, 16, 1)}, 2, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.COD, 15, 16, 10), new VillagerTrades.g(Items.SALMON, 6, Items.COOKED_SALMON, 6, 16, 5), new VillagerTrades.h(Items.pT, 2, 1, 5)}, 3, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.SALMON, 13, 16, 20), new VillagerTrades.e(Items.FISHING_ROD, 3, 3, 10, 0.2F)}, 4, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.TROPICAL_FISH, 6, 12, 30)}, 5, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.PUFFERFISH, 4, 12, 30), new VillagerTrades.c(1, 12, 30, ImmutableMap.<VillagerType, Item>builder().put(VillagerType.PLAINS, Items.OAK_BOAT).put(VillagerType.TAIGA, Items.SPRUCE_BOAT).put(VillagerType.SNOW, Items.SPRUCE_BOAT).put(VillagerType.DESERT, Items.JUNGLE_BOAT).put(VillagerType.JUNGLE, Items.JUNGLE_BOAT).put(VillagerType.SAVANNA, Items.ACACIA_BOAT).put(VillagerType.SWAMP, Items.DARK_OAK_BOAT).build())}))); // Paper - decompile fix
         hashmap.put(VillagerProfession.SHEPHERD, a(ImmutableMap.of(1, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Blocks.WHITE_WOOL, 18, 16, 2), new VillagerTrades.b(Blocks.BROWN_WOOL, 18, 16, 2), new VillagerTrades.b(Blocks.BLACK_WOOL, 18, 16, 2), new VillagerTrades.b(Blocks.GRAY_WOOL, 18, 16, 2), new VillagerTrades.h(Items.SHEARS, 2, 1, 1)}, 2, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.WHITE_DYE, 12, 16, 10), new VillagerTrades.b(Items.GRAY_DYE, 12, 16, 10), new VillagerTrades.b(Items.BLACK_DYE, 12, 16, 10), new VillagerTrades.b(Items.LIGHT_BLUE_DYE, 12, 16, 10), new VillagerTrades.b(Items.LIME_DYE, 12, 16, 10), new VillagerTrades.h(Blocks.WHITE_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.ORANGE_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.MAGENTA_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.LIGHT_BLUE_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.YELLOW_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.LIME_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.PINK_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.GRAY_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.LIGHT_GRAY_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.CYAN_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.PURPLE_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.BLUE_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.BROWN_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.GREEN_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.RED_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.BLACK_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.WHITE_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.ORANGE_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.MAGENTA_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.LIGHT_BLUE_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.YELLOW_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.LIME_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.PINK_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.GRAY_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.LIGHT_GRAY_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.CYAN_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.PURPLE_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.BLUE_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.BROWN_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.GREEN_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.RED_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.BLACK_CARPET, 1, 4, 16, 5)}, 3, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.YELLOW_DYE, 12, 16, 20), new VillagerTrades.b(Items.LIGHT_GRAY_DYE, 12, 16, 20), new VillagerTrades.b(Items.ORANGE_DYE, 12, 16, 20), new VillagerTrades.b(Items.RED_DYE, 12, 16, 20), new VillagerTrades.b(Items.PINK_DYE, 12, 16, 20), new VillagerTrades.h(Blocks.WHITE_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.YELLOW_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.RED_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.BLACK_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.BLUE_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.BROWN_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.CYAN_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.GRAY_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.GREEN_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.LIGHT_BLUE_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.LIGHT_GRAY_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.LIME_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.MAGENTA_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.ORANGE_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.PINK_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.PURPLE_BED, 3, 1, 12, 10)}, 4, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.BROWN_DYE, 12, 16, 30), new VillagerTrades.b(Items.PURPLE_DYE, 12, 16, 30), new VillagerTrades.b(Items.BLUE_DYE, 12, 16, 30), new VillagerTrades.b(Items.GREEN_DYE, 12, 16, 30), new VillagerTrades.b(Items.MAGENTA_DYE, 12, 16, 30), new VillagerTrades.b(Items.CYAN_DYE, 12, 16, 30), new VillagerTrades.h(Items.WHITE_BANNER, 3, 1, 12, 15), new VillagerTrades.h(Items.BLUE_BANNER, 3, 1, 12, 15), new VillagerTrades.h(Items.LIGHT_BLUE_BANNER, 3, 1, 12, 15), new VillagerTrades.h(Items.RED_BANNER, 3, 1, 12, 15), new VillagerTrades.h(Items.PINK_BANNER, 3, 1, 12, 15), new VillagerTrades.h(Items.GREEN_BANNER, 3, 1, 12, 15), new VillagerTrades.h(Items.LIME_BANNER, 3, 1, 12, 15), new VillagerTrades.h(Items.GRAY_BANNER, 3, 1, 12, 15), new VillagerTrades.h(Items.BLACK_BANNER, 3, 1, 12, 15), new VillagerTrades.h(Items.PURPLE_BANNER, 3, 1, 12, 15), new VillagerTrades.h(Items.MAGENTA_BANNER, 3, 1, 12, 15), new VillagerTrades.h(Items.CYAN_BANNER, 3, 1, 12, 15), new VillagerTrades.h(Items.BROWN_BANNER, 3, 1, 12, 15), new VillagerTrades.h(Items.YELLOW_BANNER, 3, 1, 12, 15), new VillagerTrades.h(Items.ORANGE_BANNER, 3, 1, 12, 15), new VillagerTrades.h(Items.LIGHT_GRAY_BANNER, 3, 1, 12, 15)}, 5, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.h(Items.PAINTING, 2, 3, 30)})));
         hashmap.put(VillagerProfession.FLETCHER, a(ImmutableMap.of(1, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.STICK, 32, 16, 2), new VillagerTrades.h(Items.ARROW, 1, 16, 1), new VillagerTrades.g(Blocks.GRAVEL, 10, Items.FLINT, 10, 12, 1)}, 2, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.FLINT, 26, 12, 10), new VillagerTrades.h(Items.BOW, 2, 1, 5)}, 3, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.STRING, 14, 16, 20), new VillagerTrades.h(Items.CROSSBOW, 3, 1, 10)}, 4, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.FEATHER, 24, 16, 30), new VillagerTrades.e(Items.BOW, 2, 3, 15)}, 5, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.dE, 8, 12, 30), new VillagerTrades.e(Items.CROSSBOW, 3, 3, 15), new VillagerTrades.j(Items.ARROW, 5, Items.TIPPED_ARROW, 5, 2, 12, 30)})));
-        hashmap.put(VillagerProfession.LIBRARIAN, a(ImmutableMap.builder().put(1, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.PAPER, 24, 16, 2), new VillagerTrades.d(1), new VillagerTrades.h(Blocks.BOOKSHELF, 9, 1, 12, 1)}).put(2, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.BOOK, 4, 12, 10), new VillagerTrades.d(5), new VillagerTrades.h(Items.pR, 1, 1, 5)}).put(3, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.INK_SAC, 5, 12, 20), new VillagerTrades.d(10), new VillagerTrades.h(Items.am, 1, 4, 10)}).put(4, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.WRITABLE_BOOK, 2, 12, 30), new VillagerTrades.d(15), new VillagerTrades.h(Items.CLOCK, 5, 1, 15), new VillagerTrades.h(Items.COMPASS, 4, 1, 15)}).put(5, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.h(Items.NAME_TAG, 20, 1, 30)}).build()));
+        hashmap.put(VillagerProfession.LIBRARIAN, a(ImmutableMap.<Integer, VillagerTrades.IMerchantRecipeOption[]>builder().put(1, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.PAPER, 24, 16, 2), new VillagerTrades.d(1), new VillagerTrades.h(Blocks.BOOKSHELF, 9, 1, 12, 1)}).put(2, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.BOOK, 4, 12, 10), new VillagerTrades.d(5), new VillagerTrades.h(Items.pR, 1, 1, 5)}).put(3, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.INK_SAC, 5, 12, 20), new VillagerTrades.d(10), new VillagerTrades.h(Items.am, 1, 4, 10)}).put(4, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.WRITABLE_BOOK, 2, 12, 30), new VillagerTrades.d(15), new VillagerTrades.h(Items.CLOCK, 5, 1, 15), new VillagerTrades.h(Items.COMPASS, 4, 1, 15)}).put(5, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.h(Items.NAME_TAG, 20, 1, 30)}).build())); // Paper - decompile fix
         hashmap.put(VillagerProfession.CARTOGRAPHER, a(ImmutableMap.of(1, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.PAPER, 24, 16, 2), new VillagerTrades.h(Items.MAP, 7, 1, 1)}, 2, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.df, 11, 16, 10), new VillagerTrades.k(13, "Monument", MapIcon.Type.MONUMENT, 12, 5)}, 3, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.COMPASS, 1, 12, 20), new VillagerTrades.k(14, "Mansion", MapIcon.Type.MANSION, 12, 10)}, 4, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.h(Items.ITEM_FRAME, 7, 1, 15), new VillagerTrades.h(Items.WHITE_BANNER, 3, 1, 15), new VillagerTrades.h(Items.BLUE_BANNER, 3, 1, 15), new VillagerTrades.h(Items.LIGHT_BLUE_BANNER, 3, 1, 15), new VillagerTrades.h(Items.RED_BANNER, 3, 1, 15), new VillagerTrades.h(Items.PINK_BANNER, 3, 1, 15), new VillagerTrades.h(Items.GREEN_BANNER, 3, 1, 15), new VillagerTrades.h(Items.LIME_BANNER, 3, 1, 15), new VillagerTrades.h(Items.GRAY_BANNER, 3, 1, 15), new VillagerTrades.h(Items.BLACK_BANNER, 3, 1, 15), new VillagerTrades.h(Items.PURPLE_BANNER, 3, 1, 15), new VillagerTrades.h(Items.MAGENTA_BANNER, 3, 1, 15), new VillagerTrades.h(Items.CYAN_BANNER, 3, 1, 15), new VillagerTrades.h(Items.BROWN_BANNER, 3, 1, 15), new VillagerTrades.h(Items.YELLOW_BANNER, 3, 1, 15), new VillagerTrades.h(Items.ORANGE_BANNER, 3, 1, 15), new VillagerTrades.h(Items.LIGHT_GRAY_BANNER, 3, 1, 15)}, 5, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.h(Items.GLOBE_BANNER_PATTERN, 8, 1, 30)})));
         hashmap.put(VillagerProfession.CLERIC, a(ImmutableMap.of(1, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.ROTTEN_FLESH, 32, 16, 2), new VillagerTrades.h(Items.REDSTONE, 1, 2, 1)}, 2, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.GOLD_INGOT, 3, 12, 10), new VillagerTrades.h(Items.LAPIS_LAZULI, 1, 1, 5)}, 3, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.RABBIT_FOOT, 2, 12, 20), new VillagerTrades.h(Blocks.GLOWSTONE, 4, 1, 12, 10)}, 4, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.SCUTE, 4, 12, 30), new VillagerTrades.b(Items.GLASS_BOTTLE, 9, 12, 30), new VillagerTrades.h(Items.ENDER_PEARL, 5, 1, 15)}, 5, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.NETHER_WART, 22, 12, 30), new VillagerTrades.h(Items.EXPERIENCE_BOTTLE, 3, 1, 30)})));
         hashmap.put(VillagerProfession.ARMORER, a(ImmutableMap.of(1, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.COAL, 15, 16, 2), new VillagerTrades.h(new ItemStack(Items.IRON_LEGGINGS), 7, 1, 12, 1, 0.2F), new VillagerTrades.h(new ItemStack(Items.IRON_BOOTS), 4, 1, 12, 1, 0.2F), new VillagerTrades.h(new ItemStack(Items.IRON_HELMET), 5, 1, 12, 1, 0.2F), new VillagerTrades.h(new ItemStack(Items.IRON_CHESTPLATE), 9, 1, 12, 1, 0.2F)}, 2, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.IRON_INGOT, 4, 12, 10), new VillagerTrades.h(new ItemStack(Items.pQ), 36, 1, 12, 5, 0.2F), new VillagerTrades.h(new ItemStack(Items.CHAINMAIL_BOOTS), 1, 1, 12, 5, 0.2F), new VillagerTrades.h(new ItemStack(Items.CHAINMAIL_LEGGINGS), 3, 1, 12, 5, 0.2F)}, 3, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.LAVA_BUCKET, 1, 12, 20), new VillagerTrades.b(Items.DIAMOND, 1, 12, 20), new VillagerTrades.h(new ItemStack(Items.CHAINMAIL_HELMET), 1, 1, 12, 10, 0.2F), new VillagerTrades.h(new ItemStack(Items.CHAINMAIL_CHESTPLATE), 4, 1, 12, 10, 0.2F), new VillagerTrades.h(new ItemStack(Items.SHIELD), 5, 1, 12, 10, 0.2F)}, 4, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.e(Items.DIAMOND_LEGGINGS, 14, 3, 15, 0.2F), new VillagerTrades.e(Items.DIAMOND_BOOTS, 8, 3, 15, 0.2F)}, 5, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.e(Items.DIAMOND_HELMET, 8, 3, 30, 0.2F), new VillagerTrades.e(Items.DIAMOND_CHESTPLATE, 16, 3, 30, 0.2F)})));
diff --git a/src/main/java/net/minecraft/server/WorldGenFeatureStateProviderWeighted.java b/src/main/java/net/minecraft/server/WorldGenFeatureStateProviderWeighted.java
index 555cf6be7..22e14fe1e 100644
--- a/src/main/java/net/minecraft/server/WorldGenFeatureStateProviderWeighted.java
+++ b/src/main/java/net/minecraft/server/WorldGenFeatureStateProviderWeighted.java
@@ -40,6 +40,6 @@ public class WorldGenFeatureStateProviderWeighted extends WorldGenFeatureStatePr
         builder.put(dynamicops.createString("type"), dynamicops.createString(IRegistry.t.getKey(this.a).toString())).put(dynamicops.createString("entries"), this.b.a(dynamicops, (iblockdata) -> {
             return IBlockData.a(dynamicops, iblockdata);
         }));
-        return (new Dynamic(dynamicops, dynamicops.createMap(builder.build()))).getValue();
+        return (new Dynamic<T>(dynamicops, dynamicops.createMap(builder.build()))).getValue(); // Paper - decompile fix
     }
 }
diff --git a/src/main/java/net/minecraft/server/WorldPersistentData.java b/src/main/java/net/minecraft/server/WorldPersistentData.java
index 55fe7625a..19e68a783 100644
--- a/src/main/java/net/minecraft/server/WorldPersistentData.java
+++ b/src/main/java/net/minecraft/server/WorldPersistentData.java
@@ -37,7 +37,7 @@ public class WorldPersistentData {
         if (t0 != null) {
             return t0;
         } else {
-            T t1 = (PersistentBase) supplier.get();
+            T t1 = supplier.get(); // Paper - decompile fix
 
             this.a(t1);
             return t1;
@@ -46,7 +46,7 @@ public class WorldPersistentData {
 
     @Nullable
     public <T extends PersistentBase> T b(Supplier<T> supplier, String s) {
-        PersistentBase persistentbase = (PersistentBase) this.data.get(s);
+        T persistentbase = (T) this.data.get(s); // Paper - decompile fix
 
         if (persistentbase == null && !this.data.containsKey(s)) {
             persistentbase = this.c(supplier, s);
@@ -62,7 +62,7 @@ public class WorldPersistentData {
             File file = this.a(s);
 
             if (file.exists()) {
-                T t0 = (PersistentBase) supplier.get();
+                T t0 = supplier.get(); // Paper - decompile fix
                 NBTTagCompound nbttagcompound = this.a(s, SharedConstants.getGameVersion().getWorldVersion());
 
                 t0.a(nbttagcompound.getCompound("data"));
-- 
2.24.1