jQuery.fn.extend()

jQuery.fn.extend()

my functions are arranged as followings:

var myBase = {
      myCat1: {
            myFunction1: function(){...},
            myFunction2: function(){...}
      },
      myCat2: {
            myFunction1: function(){...},
            myFunction2: function(){...}
      }
 }

i want to make methods like this:
$(".sample").myBase.myCat1.myFunction1();
how do i make above with jQuery.fn.extend() ??