Split methods instead of adding OPTIONAL parameters

METHODS do_one_thing IMPORTING what_i_need TYPE string.
METHODS do_another_thing IMPORTING something_else TYPE i.

to achieve the desired semantic as ABAP does not support overloading.

" anti-pattern
METHODS do_one_or_the_other
  IMPORTING
    what_i_need    TYPE string OPTIONAL
    something_else TYPE i OPTIONAL.

Optional parameters confuse callers:

• Which ones are really required?
• Which combinations are valid?
• Which ones exclude each other?

Multiple methods with specific parameters for the use case avoid this confusion by giving clear guidance which parameter combinations are valid and expected.