presto-main/src/main/java/io/prestosql/execution/resourcegroups/InternalResourceGroup.java/InternalResourceGroup/setMaxQueuedQueries
class InternalResourceGroup:    @Managed
    @Override
    public void setMaxQueuedQueries(int maxQueuedQueries)
    {
        checkArgument(maxQueuedQueries >= 0, "maxQueuedQueries is negative");
        synchronized (root) {
            this.maxQueuedQueries = maxQueuedQueries;
        }
    }