  std::wstring GetUsageStatsKeyPath(bool medium) {
    EXPECT_TRUE(!medium || system_level_);

    std::wstring result(L"Software\\");
    if (kUseGoogleUpdateIntegration) {
      result.append(L"Google\\Update\\ClientState");
      if (medium)
        result.append(L"Medium");
      result.push_back(L'\\');
      result.append(mode_->app_guid);
    } else {
      result.append(kProductPathName);
    }
    return result;
  }

The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.