// A lock for writing is needed
	// for writing to any of the following:
	// - the flowSchemas field
	// - the slice held in the flowSchemas field
	// - the priorityLevelStates field
	// - the map held in the priorityLevelStates field
	// - any field of a priorityLevelState held in that map
	lock sync.RWMutex

	// flowSchemas holds the flow schema objects, sorted by increasing