func (p *parallelReader) Done() {
	if p.stashBuffer != nil {
		globalBytePoolCap.Load().Put(p.stashBuffer)
		p.stashBuffer = nil
	}
}

// preferReaders can mark readers as preferred.
// These will be chosen before others.
func (p *parallelReader) preferReaders(prefer []bool) {
	if len(prefer) != len(p.orgReaders) {
		return
	}
	// Copy so we don't change our input.
	tmp := make([]io.ReaderAt, len(p.orgReaders))

	}
}

// Test cases below are copied 1 to 1 from sync/rwmutex_test.go (adapted to use LRWMutex)

// Borrowed from rwmutex_test.go
func parallelReader(ctx context.Context, m *LRWMutex, clocked, cunlock, cdone chan bool) {
	if m.GetRLock(ctx, "", "", time.Second) {
		clocked <- true
		<-cunlock
		m.RUnlock()
		cdone <- true
	}
}

	}
}

// Test cases below are copied 1 to 1 from sync/rwmutex_test.go (adapted to use DRWMutex)

// Borrowed from rwmutex_test.go
func parallelReader(ctx context.Context, m *DRWMutex, clocked, cunlock, cdone chan bool) {
	if m.GetRLock(ctx, nil, id, source, Options{Timeout: time.Second}) {
		clocked <- true
		<-cunlock
		m.RUnlock(context.Background())