private String buildToolTip(final List<NaviNode> nodes){
  final StringBuilder tooltip=new StringBuilder("<html>");
  boolean first=true;
  for (  final NaviNode graphNode : nodes) {
    if (!first) {
      tooltip.append("<br>");
    }
    tooltip.append(CNodesDisplayString.getDisplayString(graphNode));
    first=false;
  }
  return tooltip + "</html>";
}

private String buildToolTip ( final List < NaviNode > nodes ) { final StringBuilder tooltip = new StringBuilder ( "<html>" ) ; boolean first = true ; for ( final NaviNode graphNode : nodes ) { if ( ! first ) { tooltip . append ( "<br>" ) ; } tooltip . append ( CNodesDisplayString . getDisplayString ( graphNode ) ) ; first = false ; } return tooltip + "</html>" ; }
builds the tooltip for used for nodes that represent multiple graph nodes .
