How declare a static method?

Hi,

I was wondering for classes that extend Class: sap.ui.base.Object, how do you declare static methods?

For example, given the Dog class definition below, how would I add a static method getStaticBark() ?

I would like to call the static method as follows: my.Dog.getStaticBark();

///////////////////////////////////////////////////////////

//Dog Class Definition

sap.ui.base.Object.extend('my.Dog', {

  getBark: function () {

  return "bark";

  },

});//end class

thanks for any help.

regards,

Phong