code: public void setBaseUrl(String baseUrl) {
          if (baseUrl == null) {
              this.baseUrl = KeenConstants.SERVER_ADDRESS;
          } else {
              this.baseUrl = baseUrl;
          }
      }
docs: Sets the base API URL associated with this instance of the {@link KeenClient}.
  <p>
  Use this if you want to disable SSL.
  </p>
  @param baseUrl The new base URL (i.e. 'http://api.keen.io'), or null to reset the base URL to
  the default ('https://api.keen.io').