code: public static void i(String message, Throwable cause) {
          if (BuildConfig.DEBUG) {
              Log.i(LOG_TAG, "[" + message + "]", cause);
          }
      }
docs: <p><b>INFORMATIVE:</b> This level of logging should used be to note that something interesting to most
  people happened, i.e. when a situation is detected that is likely to have widespread impact, though isn't
  necessarily an error. Such a condition should only be logged by a module that reasonably believes that it
  is the most authoritative in that domain (to avoid duplicate logging by non-authoritative components).</p>
  <p/>
  <p><b>This level is always logged.</b></p>