How to use test

[abramhum]

Hi:
I see a test file and see the jquery.treetable.test.js,
but I dowesn,t know how to use it , is there any manual for that.
And I meet a problem when tracing jquery treetable. I didn't see any jquery bind function, but when I click the arrow icon, it will invoke the method, like following:
<span class="indenter" style="padding-left: 0px;"><a href="#" title="Expanding">&nbsp;</a></span>

And I see it call the function
$.fn.treetable = function(method) { if (methods[method]) { return methods[method].apply(this, Array.prototype.slice.call(arguments, 1)); } else if (typeof method === 'object' || !method) { return methods.init.apply(this, arguments); } else { return $.error("Method " + method + " does not exist on jQuery.treetable"); } };

Could you tell me how it work and why it work this way, any instructions is highly appreciated, thanks.