/** Retrieve the mailbox on which this comm acts */
Mailbox* get_mailbox() const;
/** Retrieve the size of the received data. Not to be mixed with @ref Activity::set_remaining() */
/** Retrieve the mailbox on which this comm acts */
Mailbox* get_mailbox() const;
/** Retrieve the size of the received data. Not to be mixed with @ref Activity::set_remaining() */