node-red node with multiple outputs but send msgs asynchron

Can I send msgs to the outputs asynchron?

Like this with e.g. four outputs:

this.on('input', function(msg) {
    this.send([ msg, null, null, null ]);

    /* do some time consuming work */

    this.send([ null, msg, null, null ]);

    /* do some time consuming work */

    this.send([ null, msg, msg, null ]);

    /* do some time consuming work */

    this.send([ null, msg, null, null ]);

    /* do some time consuming work */

    this.send([ msg, msg, msg, msg ]);
});

When I do it like this, all the msg sends are queued and send when the input callback is done.