--- /dev/null
+<?php
+
+namespace Drupal\image_test\Plugin\ImageToolkit\Operation\test;
+
+/**
+ * Builds an image toolkit operation.
+ *
+ * @ImageToolkitOperation(
+ * id = "foo_derived",
+ * toolkit = "test:derived_toolkit",
+ * operation = "blur",
+ * label = @Translation("Blur Derived"),
+ * description = @Translation("Foo derived.")
+ * )
+ */
+class FooDerived extends OperationBase { }