*"* local class implementation for public class *"* use this source file for the implementation part of *"* local helper classes *"* use this source file for any type declarations (class *"* definitions, interfaces or data types) you need for method *"* implementation or private method's signature *"* use this source file for any macro definitions you need *"* in the implementation part of the class method CONSTRUCTOR. border_style = zcl_excel_style_border=>c_border_none. border_color-theme = zcl_excel_style_color=>c_theme_not_set. border_color-indexed = zcl_excel_style_color=>c_indexed_not_set. endmethod.