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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 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)