Java on TC doesn't compile this code for some reason.

worldedit-core/src/main/java/com/sk89q/worldedit/extent/transform/BlockTransformExtent.java

@@ -143,8 +143,7 @@ public class BlockTransformExtent extends AbstractDelegateExtent {
         List<String> directionalProperties = properties.stream()
                 .filter(prop -> prop instanceof BooleanProperty)
                 .filter(prop -> directionNames.contains(prop.getName()))
-                .map(prop -> (BooleanProperty) prop)
-                .filter(block::getState)
+                .filter(property -> (Boolean) block.getState(property))
                 .map(Property::getName)
                 .map(String::toUpperCase)
                 .map(Direction::valueOf)