public static DiscourseApi GetInstance(string baseUrl, string apiKey)
 {
     if (_instance == null || _instance.BaseUrl != baseUrl ||
         _instance.ApiKey != apiKey)
     {
         _instance = new DiscourseApi(baseUrl, apiKey);
     }
     return _instance;
 }
 public static DiscourseApi GetInstance(string baseUrl, string apiKey)
 {
     if (_instance == null || _instance.BaseUrl != baseUrl ||
         _instance.ApiKey != apiKey)
     {
         _instance = new DiscourseApi(baseUrl, apiKey);
     }
     return(_instance);
 }