presto-main/src/main/java/io/prestosql/execution/scheduler/NodeSchedulerConfig.java/NodeSchedulerConfig/setNodeSchedulerPolicy
class NodeSchedulerConfig:    @LegacyConfig("node-scheduler.network-topology")
    @Config("node-scheduler.policy")
    public NodeSchedulerConfig setNodeSchedulerPolicy(String nodeSchedulerPolicy)
    {
        this.nodeSchedulerPolicy = toNodeSchedulerPolicy(nodeSchedulerPolicy);
        return this;
    }