Added missing @Override annotations

src/main/java/appeng/bootstrap/BlockDefinitionBuilder.java

@@ -129,6 +129,7 @@ class BlockDefinitionBuilder implements IBlockBuilder
 		return this;
 	}
 
+	@Override
 	public BlockDefinitionBuilder rendering( BlockRenderingCustomizer callback )
 	{
 		if( Platform.isClient() )

src/main/java/appeng/bootstrap/BlockRendering.java

@@ -58,6 +58,7 @@ class BlockRendering implements IBlockRendering
 	@SideOnly( Side.CLIENT )
 	private Map<String, IModel> builtInModels = new HashMap<>();
 
+	@Override
 	@SideOnly( Side.CLIENT )
 	public IBlockRendering modelCustomizer( BiFunction<ModelResourceLocation, IBakedModel, IBakedModel> customizer )
 	{

src/main/java/appeng/bootstrap/ItemDefinitionBuilder.java

@@ -144,6 +144,7 @@ class ItemDefinitionBuilder implements IItemBuilder
 		callback.customize( itemRendering );
 	}
 
+	@Override
 	public ItemDefinition build()
 	{
 		if( !AEConfig.instance.areFeaturesEnabled( features ) )