code: async def copy_messages(self, selected: SelectedMailbox,
                              sequence_set: SequenceSet,
                              mailbox: str) \
              -> Tuple[Optional[CopyUid], SelectedMailbox]:
          
          ...
docs: Copy a set of messages into the given mailbox.
  
          See Also:
              `RFC 3501 6.4.7.
              <https://tools.ietf.org/html/rfc3501#section-6.4.7>`_
  
          Args:
              selected: The selected mailbox session.
              sequence_set: Sequence set of message sequences or UIDs.
              mailbox: Name of the mailbox to copy messages into.
  
          Raises:
              :class:`~pymap.exceptions.MailboxNotFound`
              :class:`~pymap.exceptions.MailboxReadOnly`