private static LifelineState createState(Lifeline lifeline, GraphSet graphs, Vertex dest) {
    long start = dest.getTimestamp();
    long end = dest.getNextVertexOnDest() == null ? graphs.getMaxTime()
        : dest.getNextVertexOnDest().getTimestamp();
    return new LifelineState(lifeline, dest.getState(), start, end);
  }
Create the GUI and show it. For thread safety, this method should be invoked from the
event-dispatching thread.
geode-core/src/test/java/org/apache/geode/sequence/GemfireSequenceDisplay.java