presto-main/src/main/java/io/prestosql/execution/resourcegroups/LegacyResourceGroupConfigurationManager.java/LegacyResourceGroupConfigurationManager/LegacyResourceGroupConfigurationManager
class LegacyResourceGroupConfigurationManager:    @Inject
    public LegacyResourceGroupConfigurationManager(QueryManagerConfig config)
    {
        hardConcurrencyLimit = config.getMaxConcurrentQueries();
        maxQueued = config.getMaxQueuedQueries();
    }