toXML method

@override String toXML()

Implementation

@override
String toXML() {
  return '''
  <?xml version="1.0" encoding="utf-8"?>
  <cupps xmlns:xsi="$xsi" messageName="$messageName" messageID="$messageID">
      <$messageName result="$result">
          ${interfaceLevels.map((e) => e.toXML()).join("")}
      </$messageName>
  </cupps>
  '''
      .replaceAll("\n", "")
      .replaceAll("\t", "")
      .replaceAll("  ", "");
}