message: Remove no longer needed check for Planet elements
  The for loop update ensures we only loop over Planet elements.
diff: @@ -118,11 +118,6 @@ std::vector<Planet::Attributes> parsePlanetAttributes()
  auto rootElement = xmlDocument.firstChildElement(rootElementName);
  for (const auto* node = rootElement->firstChildElement("Planet"); node; node = node->nextSiblingElement("Planet"))
  {
  - std::string elementName("Planet");
  - if (node->value() != elementName)
  - {
  - throw std::runtime_error(xmlDocument.value() + " missing " + elementName + " tag");
  - }
  planetAttributes.push_back(parsePlanet(node->toElement()));
  }
  