code: public float getTotalLeading() {
      	float m = font == null ?
      			Font.DEFAULTSIZE * multipliedLeading : font.getCalculatedLeading(multipliedLeading);
      	if (m > 0 && !hasLeading()) {
      		return m;
      	}
      	return getLeading() + m;
      }
docs: Gets the total leading.
  This method is based on the assumption that the
  font of the Paragraph is the font of all the elements
  that make part of the paragraph. This isn't necessarily
  true.
  @return the total leading (fixed and multiplied)