code: public Task checkConfigureEvcMode_Task(String evcModeKey) throws RuntimeFault, RemoteException {
          ManagedObjectReference task = getVimService().checkConfigureEvcMode_Task(getMOR(), evcModeKey);
          return new Task(getServerConnection(), task);
      }
docs: Test the validity of configuring an EVC mode on the managed cluster.
  
  @param evcModeKey A key referencing the desired EVC mode.
  @return Task with which to monitor the operation.
  @throws RuntimeFault    Thrown if any type of runtime fault is thrown that is not covered by the other faults; for example, a communication error.
  @throws RemoteException