code: def delete(self):
          
          if not self.object_id:
              raise RuntimeError('Attempting to delete an unsaved Contact')
  
          url = self.build_url(
              self._endpoints.get('root_contact').format(id=self.object_id))
  
          response = self.con.delete(url)
  
          return bool(response)
docs: Deletes this contact
  
          :return: Success or Failure
          :rtype: bool
          :raises RuntimeError: if contact is not yet saved to cloud