fsMap := make(map[string]*flowcontrol.FlowSchema, len(newFSs))
	var haveExemptFS, haveCatchAllFS bool
	for i, fs := range newFSs {
		otherFS := fsMap[fs.Name]
		if otherFS != nil {
			// This client is forbidden to do this.
			panic(fmt.Sprintf("Given two FlowSchema objects with the same name: %s and %s", fcfmt.Fmt(otherFS), fcfmt.Fmt(fs)))
		}
		fsMap[fs.Name] = fs