@Override
    public void execute(FunctionContext context) {
      InternalDistributedSystem instance = InternalDistributedSystem.getAnyInstance();
      if (instance == null) {
        context.getResultSender().lastResult(new HashSet());
        return;
      }

      InternalDistributedMember member = instance.getDistributedMember();

      Set<Dependency> dependencies = DeadlockDetector.collectAllDependencies(member);
      context.getResultSender().lastResult(dependencies);
    }
Find any deadlocks the exist in this distributed system.

The deadlocks are returned as a list of dependencies. See {@link DeadlockDetector}
geode-core/src/main/java/org/apache/geode/distributed/internal/deadlock/GemFireDeadlockDetector.java