What is the predefined reference variable used in ABAP OO to address the object itself?

In ABAP Object-Oriented programming, the predefined reference variable that is used to refer to the object itself within a method of a class is known as 'ME'. This variable provides a way for the instance of the class to reference its own attributes and methods. It is particularly useful in contexts where you need to distinguish between instance variables and parameters or local variables that may have the same name.

When you use 'ME', it enhances code readability and ensures that any operations performed within the method are explicitly referencing the object's own data and functionality. This is essential for encapsulation, which is a fundamental principle in object-oriented design, allowing for a clear distinction between an object's internal state and external interactions.

The other terms, while relevant in different contexts, do not denote the object itself in ABAP. 'THIS' is not a recognized keyword in ABAP, while 'SUPER' refers to the parent class in a subclass context, allowing access to methods and attributes that are inherited. 'SELF' is present in some programming languages, but it is not applicable in ABAP; thus, it does not serve the same purpose as 'ME'.