pub unsafe extern "C" fn xmpp_conn_send_queue_drop_element(
conn: *mut xmpp_conn_t,
which: xmpp_queue_element_t,
) -> *mut c_charpub unsafe extern "C" fn xmpp_conn_send_queue_drop_element(
conn: *mut xmpp_conn_t,
which: xmpp_queue_element_t,
) -> *mut c_char