code: private OnClickListener createFloatingActionButtonListener() {
          return new OnClickListener() {
  
              @Override
              public void onClick(final View v) {
                  fragment.showAlertDialog(v);
              }
  
          };
      }
docs: Creates and returns a listener, which allows to show an alert dialog using a circle reveal
  animation, when the corresponding floating action button is clicked.
  
  @return The listener, which has been created, as an instance of the type {@link
  OnClickListener}