Update mappings to stable_39-1.12 (#322)

src/main/java/appeng/block/storage/BlockDrive.java

@@ -40,6 +40,7 @@ import net.minecraftforge.common.property.ExtendedBlockState;
 import net.minecraftforge.common.property.IExtendedBlockState;
 import net.minecraftforge.common.property.IUnlistedProperty;
 
+import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
 
@@ -52,7 +53,7 @@ public class BlockDrive extends AEBaseTileBlock {
     }
 
     @Override
-    public BlockRenderLayer getBlockLayer() {
+    public BlockRenderLayer getRenderLayer() {
         return BlockRenderLayer.CUTOUT;
     }