docs: def get_from_search_doc(cls, doc_id):
          """
          Returns an instance of the model from a search document id.
  
          :param doc_id: Search document id
          :return: Instance of cls
          """
          # If the document was passed instead of the doc_id, get the document.
          if hasattr(doc_id, 'doc_id'):
              doc_id = doc_id.doc_id
          return cls.from_urlsafe(doc_id)