<parameter name="canDelete">isComponentType(object.getParent(),'com.test.fw.wb.mvc.core.VerticalBox')</parameter>

  private static final String DEF_functions = StringUtils.join(new String[]{
      "def isModelType(model, c) {",
      "  if (c is String) {",
      "    return ReflectionUtils.isSuccessorOf((Class) model.description.componentClass, c);",
      "  } else {",
      "    return c.isAssignableFrom(model.description.componentClass);",
      "  }",
      "};",
      "def isSuccessorOf(o, c) {",
      "  if (c is String) {",
      "    return ReflectionUtils.isSuccessorOf(o, c);",
      "  } else {",
      "    return o != null && c.isAssignableFrom(o.getClass());",
      "  }",
      "};",
      "def isComponentType(c) {",
      "  return isModelType(component, c);",
      "};",
      "def isReferenceType(c) {",
      "  return isModelType(reference, c);",
      "};",
      "def isContainerType(c) {",
      "  return isModelType(container, c);",
      "};",
      "def isContainerThis() {",
      "  return isSuccessorOf(container.creationSupport, "
          + "'org.eclipse.wb.internal.core.model.creation.ThisCreationSupport');",
      "};",}, "\n");

<parameter name="canDelete"><![CDATA[
			isComponentType(object.getParent(),"com.test.fw.wb.mvc.core.VerticalBox")]]>
		</parameter>