code: public void renderFather(final StringBuilder builder,
              final int pad, final Person father) {
          renderParent(builder, pad, father, "Father");
      }
docs: This method is public for testing purposes only. Do not try to call it
  outside of the context of the rendering engine.
  
  @param builder Buffer for holding the rendition
  @param pad Minimum number spaces for padding each line of the output
  @param father Father