append method

@override BasicStringSingleCommand append(Appendat<String> appendat)

Implementation

@override
BasicStringSingleCommand append(Appendat<String> appendat) {
  var argument = appendat.argument();
  if (argument == null) {
    return this;
  }
  if (argument.isEmpty) {
    return this;
  }
  super.append(appendat);
  return this;
}