set a field to be remove when exporting the final output . concode_field_sep List<String> toRemove concode_elem_sep Map<String,Object> toRename concode_field_sep void addToRename concode_elem_sep int rename concode_elem_sep int remove
void function ( String arg0 ) { if ( arg0 == null ) { return ; } if ( ! arg0 . isEmpty ( ) ) { toRemove . add ( arg0 ) ; } }