presto-resource-group-managers/src/main/java/io/prestosql/plugin/resourcegroups/FileResourceGroupConfigurationManager.java/FileResourceGroupConfigurationManager/configure
class FileResourceGroupConfigurationManager:    @Override
    public void configure(ResourceGroup group, SelectionContext<ResourceGroupIdTemplate> context)
    {
        configureGroup(group, getMatchingSpec(group, context));
    }