code: @Override
      public CommandGroup createCommandGroup(final String groupId, final Object[] members,
                                             final boolean exclusive, final CommandConfigurer configurer) {
  		final CommandGroupFactoryBean groupFactory = new CommandGroupFactoryBean(groupId, null, getCommandConfigurer(), members);
  		groupFactory.setExclusive(exclusive);
  		return groupFactory.getCommandGroup();
  	}
docs: Creates a command group, configuring the group using the ObjectConfigurer
  service (pulling visual configuration properties from an external
  source). This method will also auto-configure contained Command members
  that have not yet been configured.
  
  @param groupId id to configure this commandGroup.
  @param members members to add to the group.
  @return a {@link CommandGroup} that holds the given members.