* @see ptolemy.graph.analysis.Analysis
*/
protected void _initializeAnalyses() {
super._initializeAnalyses();
_transitiveClosureAnalysis = new TransitiveClosureAnalysis(this);
_acyclicAnalysis = new CycleExistenceAnalysis(this);
_sinkNodeAnalysis = new SinkNodeAnalysis(this);
_sourceNodeAnalysis = new SourceNodeAnalysis(this);
}