code: @TargetApi(Build.VERSION_CODES.HONEYCOMB)
  	public <F extends android.app.Fragment> void setTypeface(F fragment, String typefaceName, int style) {
  		View root = fragment.getView();
  		if (root instanceof TextView) {
  			setTypeface((TextView) root, typefaceName, style);
  		} else if (root instanceof ViewGroup) {
  			setTypeface((ViewGroup) root, typefaceName, style);
  		}
  	}
docs: Set the typeface to the all text views belong to the fragment.
  Make sure to call this method after fragment view creation.
  If you use fragments in the support package,
  call {@link com.drivemode.android.typeface.TypefaceHelper#supportSetTypeface(android.support.v4.app.Fragment, String, int)} instead.
  @param fragment the fragment.
  @param typefaceName typeface name.
  @param style the typeface style.