jquery plugin method ands callbacks

jquery plugin method ands callbacks

I have a basic plugin that populates an array within the plugin. How can I
get that array via a method call with parameters. This is my first plugin
so please go easy on me if this is a dumb question.
basic Plugin
(function($) {
$.fn.myPlugin = function() {
return this.each(function(){
tagArray = []; // my array that is populated
//code that does stuff to populate array
});
}
})(jQuery);
I would like to get the tagArray like so...
var arr = $('.className').myPlugin("getArray");
Where I can then use that array elsewhere. How can I accomplish this?
Thank you for any help.