Calling a function in AngularJS service from the same service?

I think the best way is to go like this:

var myFunctions = 
{

    myFunc1: function(param) {

    },

    myFunc2: function(param) {
       return foo + myFunctions.myFunc1(param)// do some stuff with the first function        
    }

}
return myFunctions;

because I think if you use this, it may get conflict with the scope where you use the service.