docs: def list(cls, session, mailbox):
          """Return conversations in a mailbox.
  
          Args:
              session (requests.sessions.Session): Authenticated session.
              mailbox (helpscout.models.Mailbox): Mailbox to list.
  
          Returns:
              RequestPaginator(output_type=helpscout.models.Conversation):
                  Conversations iterator.
          """
          endpoint = '/mailboxes/%d/conversations.json' % mailbox.id
          return super(Conversations, cls).list(session, endpoint)