I hope these are the last few errors

worldedit-core/src/main/java/com/sk89q/worldedit/extension/platform/Actor.java

@@ -84,7 +84,7 @@ public interface Actor extends Identifiable, SessionOwner, Subject, Metadatable
      */
     void print(Component component);
 
-    /**F
+    /**
      * Returns true if the actor can destroy bedrock.
      *
      * @return true if bedrock can be broken by the actor

worldedit-core/src/main/java/com/sk89q/worldedit/function/mask/ABlockMask.java

@@ -21,16 +21,12 @@ public abstract class ABlockMask extends AbstractExtentMask {
         List<String> strings = new ArrayList<>();
         for (BlockType type : BlockTypes.values) {
             if (type != null) {
-                boolean hasAll = true;
+                boolean hasAll;
-                boolean hasAny = false;
                 List<BlockState> all = type.getAllStates();
-                for (BlockState state : all) {
+                hasAll = all.stream().map(this::test).reduce(true, (a, b) -> a && b);
-                    hasAll &= test(state);
-                    hasAny = true;
-                }
                 if (hasAll) {
                     strings.add(type.getId());
-                } else if (hasAny) {
+                } else {
                     for (BlockState state : all) {
                         if (test(state)) {
                             strings.add(state.getAsString());

worldedit-core/src/main/java/com/sk89q/worldedit/function/mask/Mask.java

@@ -81,15 +81,15 @@ public interface Mask {
         return value == null ? this : value;
     }
 
-    default Mask and(Mask other) {
+//    default Mask and(Mask other) {
-        Mask value = and(other);
+//        Mask value = and(other);
-        return value == null ? new MaskIntersection(this, other) : value;
+//        return value == null ? new MaskIntersection(this, other) : value;
-    }
+//    }
 
-    default Mask or(Mask other) {
+//    default Mask or(Mask other) {
-        Mask value = or(other);
+//        Mask value = or(other);
-        return value == null ? new MaskUnion(this, other) : value;
+//        return value == null ? new MaskUnion(this, other) : value;
-    }
+//    }
 
     default Mask inverse() {
         if (this instanceof Masks.AlwaysTrue) {

worldedit-core/src/main/java/com/sk89q/worldedit/session/request/RequestExtent.java

@@ -34,9 +34,8 @@ import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
-
-import javax.annotation.Nullable;
 import java.util.List;
+import javax.annotation.Nullable;
 
 public class RequestExtent implements Extent {
 
@@ -96,6 +95,12 @@ public class RequestExtent implements Extent {
         return getExtent().setBlock(position, block);
     }
 
+    @Override
+    public <T extends BlockStateHolder<T>> boolean setBlock(int x, int y, int z, T block)
+        throws WorldEditException {
+        return getExtent().setBlock(x, y, z, block);
+    }
+
     @Override
     public boolean setTile(int x, int y, int z, CompoundTag tile) throws WorldEditException {
         return getExtent().setTile(x, y, z, tile);
@@ -106,6 +111,11 @@ public class RequestExtent implements Extent {
         return getExtent().setBiome(position, biome);
     }
 
+    @Override
+    public boolean setBiome(int x, int y, int z, BiomeType biome) {
+        return getExtent().setBiome(BlockVector2.at(x,z), biome);
+    }
+
     @Override
     @Nullable
     public Operation commit() {

worldedit-core/src/main/java/com/sk89q/worldedit/world/NullWorld.java

@@ -87,11 +87,20 @@ public class NullWorld extends AbstractWorld {
         return false;
     }
 
+    @Override
+    public BiomeType getBiome(BlockVector2 position) {
+        return BiomeTypes.THE_VOID;
+    }
     @Override
     public BiomeType getBiomeType(int x, int z) {
         return BiomeTypes.THE_VOID;
     }
 
+    @Override
+    public boolean setBiome(BlockVector2 position, BiomeType biome) {
+        return false;
+    }
+
     @Override
     public boolean setBiome(int x, int y, int z, BiomeType biome) {
         return false;