code: public ApnsPayloadBuilder setLocalizedAlertMessage(final String localizedAlertKey, final String... alertArguments) {
          this.localizedAlertKey = localizedAlertKey;
          this.localizedAlertArguments = (alertArguments != null && alertArguments.length > 0) ? alertArguments : null;
  
          this.alertBody = null;
  
          return this;
      }
docs: <p>Sets the key of a message in the receiving app's localized string list to be shown for the push notification.
  The message in the app's string list may optionally have placeholders, which will be populated by values from the
  given {@code alertArguments}. Clears any previously-set literal alert body.</p>
  
  <p>By default, no message is shown.</p>
  
  @param localizedAlertKey a key to a string in the receiving app's localized string list
  @param alertArguments arguments to populate placeholders in the localized alert string; may be {@code null}
  
  @return a reference to this payload builder
  
  @see ApnsPayloadBuilder#setAlertBody(String)