Understanding the usage of the .data() method .

Understanding the usage of the .data() method .

I have a question about the $.data() method , actually about JavaScript terminology , 

HERE , is the documentation for the data() method and there is the following example:

  1. var div = $( "div" )[ 0 ];
  2. jQuery.data( div, "test", {
  3.   first: 16,
  4.   last: "pizza!"
  5. });
now in the above example i can describe, the usage of the .data() method as follows:

"the data method is being used to associate arbitary data to the <div> element. "

now i was going through the code of animateSlider.js  and came across the following line of code:

  1. $.data(this,"animateSlider",new animateSlider(this,options).init());
Well i understand what that line of code is doing ?, but if you had to document what exactly the above line of code was doing , what would you say ? 

"the data method is being used to associate a instance of animateSlider to the element" ?? how would you document the usage of the data() method in the above line of code. 

is that correct ? 

P.S. the line in concern can be seen HERE .