eaning it is the per-session thingie capable of <code><a class="el" href="classipc_1_1session_1_1shm_1_1classic_1_1Session__impl.html#a3fec4d70c742570ea8699cdc13b29108" title="See shm::classic::Session_mv counterpart.">lend_object()</a></code> (prepare to transmit to opposing conversant) and <code><a class="el" href="classipc_1_1session_1_1shm_1_1classic_1_1Session__impl.html#a9d970e1fd44cf7932d4160e26a45fa6c" title="See shm::classic::Session_mv counterpart.">borrow_object()</a></code> (accept the same). </