code: func createFSGroupStrategy(opts *policy.FSGroupStrategyOptions) (group.GroupStrategy, error) {
  	switch opts.Rule {
  	case policy.FSGroupStrategyRunAsAny:
  		return group.NewRunAsAny()
  	case policy.FSGroupStrategyMayRunAs:
  		return group.NewMayRunAs(opts.Ranges)
  	case policy.FSGroupStrategyMustRunAs:
  		return group.NewMustRunAs(opts.Ranges)
  	default:
  		return nil, fmt.Errorf("Unrecognized FSGroup strategy type %s", opts.Rule)
  	}
  }
docs: // createFSGroupStrategy creates a new fsgroup strategy