Implementing Local Auxiliary Classes
Use
The Class Builder lets you implement local auxiliary classes within a global class. This enhancement can be useful when you want to encapsulate implementation details of the global class to hide them from outside. The local auxiliary classes can only be seen and used within the defining global class.
Procedure
The ABAP Editor for the class implementation is displayed.
CLASS <HELPER_CLASS_NAME> DEFINITION.
...
ENDCLASS.
CLASS <HELPER_CLASS_NAME> IMPLEMENTATION.
...
ENDCLASS.