class_docstr: Metadata required to render a plugin on the frontend.
  
  Each argument to the constructor is publicly accessible under a
  field of the same name. See constructor docs for further details.
code: def is_ng_component(self):
      return self._is_ng_component
  
imports: from abc import ABCMeta
  from abc import abstractmethod
label_desc: Use image node_id 4 for calling the FrontendMetadata obj's underlying member method code with example usage: obj.is_ng_component() and returns: self