public ConsulEndpointGroupBuilder registryFetchIntervalMillis(long registryFetchIntervalMillis) {
        checkArgument(registryFetchIntervalMillis > 0, "registryFetchIntervalMillis: %s (expected: > 0)",
                      registryFetchIntervalMillis);
        this.registryFetchIntervalMillis = registryFetchIntervalMillis;
        return this;
    }
Sets the interval between fetching registry requests in milliseconds.
If not set, {@value #DEFAULT_HEALTH_CHECK_INTERVAL_MILLIS} is used by default.
consul/src/main/java/com/linecorp/armeria/client/consul/ConsulEndpointGroupBuilder.java