code: public void setManagedByVDC(ClusterComputeResource cluster, boolean status) throws InvalidState, NotFound, RuntimeFault, RemoteException {
          getVimService().setManagedByVDC(getMOR(), cluster.getMOR(), status);
      }
docs: Sets whether a cluster is managed by a Virtual Datacenter. Setting this to true will prevent users from disabling
  DRS for the cluster.
  
  @param cluster Cluster object
  @param status  True if the cluster is managed by a Virtual Datacenter
  @throws InvalidState
  @throws NotFound
  @throws RuntimeFault
  @throws RemoteException