code: @Override
      public void renderBranch( PositionedText target, double x, double y,
                                Size size, Collection<Diagram.Figure> branches, boolean forward )
      {
          throw new UnsupportedOperationException( "not implemented" );
      }
docs: <b>Examples:</b>
  <pre><code>
  o-+--&gt;|one|--+-&gt;o
  |          |
  +--&gt;|two|--+
  |          |
  +-&gt;|three|-+
  </code></pre>