how to get executed command name in beforeCommand or AfterCommand event - WYSIHTML5?

Question

Is there exist a way to figure out which command is fired in "beforecommand:Composer" event ? i.e :

Editor.on("beforecommand:composer", function () {
    console.log(commandName);
});

I used editor in chat application so I need to catch event name and values to save formatting after clear the textarea.