var hrs []heldRequest
	for {
		for plName, hrs = range cts.heldRequestsMap {
			goto GotOne
		}
		return "", nil, 0
	GotOne:
		if nhr := len(hrs); nhr > 0 {
			hrv := hrs[nhr-1]
			hrs = hrs[:nhr-1]
			hr = &hrv
		}
		if len(hrs) == 0 {
			delete(cts.heldRequestsMap, plName)
		} else {
			cts.heldRequestsMap[plName] = hrs
		}
		if hr != nil {
			nCount = len(hrs)
			return