/** Creates and start an async send to the mailbox #dest */
static Comm &send_async(s4u::Actor *sender, Mailbox &dest, void *data, int simulatedByteAmount);
/** Creates (but don't start) an async recv onto the mailbox #from */
/** Creates and start an async send to the mailbox #dest */
static Comm &send_async(s4u::Actor *sender, Mailbox &dest, void *data, int simulatedByteAmount);
/** Creates (but don't start) an async recv onto the mailbox #from */