presto-main/src/main/java/io/prestosql/execution/scheduler/TopologyFileConfig.java/TopologyFileConfig/setRefreshPeriod
class TopologyFileConfig:    @Config("node-scheduler.network-topology.refresh-period")
    public TopologyFileConfig setRefreshPeriod(Duration refreshPeriod)
    {
        this.refreshPeriod = refreshPeriod;
        return this;
    }