code: public static synchronized MCAAuthorizationManager createInstance(Context context, String tenantId, String bluemixRegion) {
          instance = createInstance(context, tenantId);
          if (null != bluemixRegion) {
              instance.bluemixRegionSuffix = bluemixRegion;
  
          }
          return instance;
      }
docs: Init singleton instance with context, tenantId and Bluemix region.
  @param context Application context
  @param tenantId the unique tenant id of the MCA service instance that the application connects to.
  @param bluemixRegion Specifies the Bluemix deployment to use.
  @return The singleton instance