question: return the second argument if the first one evaluates to null or empty string . concode_field_sep PlaceHolder placeHolder concode_field_sep T ifNot
target: T function ( T arg0 , T arg1 ) { if ( arg0 == null || arg0 . toString ( ) == null || arg0 . toString ( ) . isEmpty ( ) ) { return arg1 ; } return arg0 ; }