/** Do the real work of demote. */
void demoteInternal(long nodeId, Locker locker, int lockTableIndex) {
Map<Long, Lock> lockTable = lockTables[lockTableIndex];
Lock useLock = lockTable.get(Long.valueOf(nodeId));
useLock.demote(locker);
locker.moveWriteToReadLock(nodeId, useLock);
}
