Get Caller child class name in Parent class ax 2012

//How to get Caller child class name in Parent class ax 2012

Class - > Test // Parent class

                  Method - > Test - get(Type _type = type::none)

                         //To differentiate caller class use _type value

Class - > TestTrans1 extends Test // Child Class 1

                  method - > TestTrans1 - get(Type _type = type::test1)

                             code : super(_type)

Class - > TestTrans2 extends Test // Child Class 2

                  method - > TestTrans2 - get(Type _type = type::test2)

                             code : super(_type)