code: def get_registration_id_info(self, registration_id):
          
          response = self.registration_info_request(registration_id)
          if response.status_code == 200:
              return response.json()
          return None
docs: Returns details related to a registration id if it exists otherwise return None
  
          Args:
              registration_id: id to be checked
  
          Returns:
              dict: info about registration id
              None: if id doesn't exist