@Managed interface MyComponent extends ComponentSpec {
    String getPublicData()
    void setPublicData(String data)
}
@Managed interface MyComponentInternal extends MyComponent {
    String getInternalData()
    void setInternalData(String internal)
}
// end::type-declaration[]

// tag::type-registration[]
// tag::internal-view-mutation[]
class MyPlugin extends RuleSource {
// end::internal-view-mutation[]
    @ComponentType