set the target value . concode_field_sep String code concode_elem_sep String message concode_elem_sep String target concode_field_sep String code concode_elem_sep ApiErrorBase withCode concode_elem_sep String message concode_elem_sep String target concode_elem_sep ApiErrorBase withMessage
ApiErrorBase function ( String arg0 ) { this . target = arg0 ; return this ; }