code: public void renderMother(final StringBuilder builder,
              final int pad, final Person mother) {
          renderParent(builder, pad, mother, "Mother");
      }
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 mother Mother