presto-resource-group-managers/src/main/java/io/prestosql/plugin/resourcegroups/ResourceGroupSpec.java/ResourceGroupSpec/toString
class ResourceGroupSpec:    @Override
    public String toString()
    {
        return toStringHelper(this)
                .add("name", name)
                .add("softMemoryLimit", softMemoryLimit)
                .add("maxQueued", maxQueued)
                .add("softConcurrencyLimit", softConcurrencyLimit)
                .add("hardConcurrencyLimit", hardConcurrencyLimit)
                .add("schedulingPolicy", schedulingPolicy)
                .add("schedulingWeight", schedulingWeight)
                .add("jmxExport", jmxExport)
                .add("softCpuLimit", softCpuLimit)
                .add("hardCpuLimit", hardCpuLimit)
                .toString();
    }