public void uncollapse(GraphNode master,Object author){
  CollapseData removedGroup=collapser.getCollapseData(master);
  if (null == removedGroup) {
    return;
  }
  collapser.uncollapse(master);
  fireCollapseChanged(CollapseData.EMPTY_LIST,Collections.singleton(removedGroup),author);
}

public void uncollapse ( GraphNode master , Object author ) { CollapseData removedGroup = collapser . getCollapseData ( master ) ; if ( null == removedGroup ) { return ; } collapser . uncollapse ( master ) ; fireCollapseChanged ( CollapseData . EMPTY_LIST , Collections . singleton ( removedGroup ) , author ) ; }
uncollapse a specific master node .
