code: async def check_mailbox(self, selected: SelectedMailbox, *,
                              wait_on: Event = None,
                              housekeeping: bool = False) -> SelectedMailbox:
          
          ...
docs: Checks for any updates in the mailbox.
  
          If ``wait_on`` is given, this method should block until either this
          event is signalled or the mailbox has detected updates. This method may
          be called continuously as long as ``wait_on`` is not signalled.
  
          If ``housekeeping`` is True, perform any house-keeping necessary by the
          mailbox backend, which may be a slower operation.
  
          See Also:
              `RFC 3501 6.1.2.
              <https://tools.ietf.org/html/rfc3501#section-6.1.2>`_,
              `RFC 3501 6.4.1.
              <https://tools.ietf.org/html/rfc3501#section-6.4.1>`_
              `RFC 2177 <https://tools.ietf.org/html/rfc2177>`_
  
          Args:
              selected: The selected mailbox session.
              wait_on: If given, block until this event signals.
              housekeeping: If True, the backend may perform additional
                  housekeeping operations if necessary.
  
          Raises:
              :class:`~pymap.exceptions.MailboxNotFound`