func MirrorPercent(in *networking.HTTPRoute) *core.RuntimeFractionalPercent {
	switch {
	case in.MirrorPercentage != nil:
		if in.MirrorPercentage.GetValue() > 0 {
			return &core.RuntimeFractionalPercent{
				DefaultValue: translatePercentToFractionalPercent(in.MirrorPercentage),
			}
		}
		// If zero percent is provided explicitly, we should not mirror.
		return nil
	// nolint: staticcheck