void UrlQuery::Remove(const std::string& key) {
  auto it = Find(key);
  if (it != parameters_.end()) {
    parameters_.erase(it);
  }
}
void UrlQuery::Remove(const std::string& key) {
  auto it = Find(key);
  if (it != parameters_.end()) {
    parameters_.erase(it);
  }
}