@ SuppressWarnings ( "unchecked" ) public void addChild ( final AbstractEdge < ? > edge , final AbstractNode child ) { if ( child == null || edge == null || edge . getIntervals ( ) == null || edge . getIntervals ( ) . size ( ) == 0 ) { throw new IllegalArgumentException ( "Cannot add null child or empty edge" ) ; } edge . setSubDiagram ( child ) ; edges . add ( ( AbstractEdge < T > ) edge ) ; }
Create an out - going edge to the given node . The edge and child node are mutable objects . If they are used in another tree it d better to clone before adding them .