ServiceCluster: "cluster",
					},
				},
			},
			Owner: "real-owner",
		},
		RawMetadata: map[string]any{},
	}
	node.Metadata.Owner = "real-owner"
	node.RawMetadata["OWNER"] = "fake-owner"
	node.RawMetadata["UNKNOWN"] = "new-field"
	node.RawMetadata["A"] = 1
	node.RawMetadata["B"] = map[string]any{"b": 1}

	out := ConvertNodeToXDSNode(node)
	{

	// Add locality options.
	opts := getLocalityOptions(node.Locality)

	opts = append(opts, getStatsOptions(node.Metadata)...)

	opts = append(opts,
		option.NodeMetadata(node.Metadata, node.RawMetadata),
		option.RuntimeFlags(extractRuntimeFlags(node.Metadata.ProxyConfig, policy)),
		option.EnvoyStatusPort(node.Metadata.EnvoyStatusPort),
		option.EnvoyPrometheusPort(node.Metadata.EnvoyPrometheusPort))
	return opts
}

	return newOption("deferred_cluster_creation", deferred)
}

func LoadStatsConfigJSONStr(node *model.Node) Instance {
	// JSON string for configuring Load Reporting Service.
	if json, ok := node.RawMetadata["LOAD_STATS_CONFIG_JSON"].(string); ok {
		return newOption("load_stats_config_json_str", json)
	}
	return skipOption("load_stats_config_json_str")
}

type HistogramMatch struct {

// Node is a typed version of Envoy node with metadata.
type Node struct {
	// ID of the Envoy node
	ID string
	// Metadata is the typed node metadata
	Metadata *BootstrapNodeMetadata
	// RawMetadata is the untyped node metadata
	RawMetadata map[string]any
	// Locality from Envoy bootstrap
	Locality *core.Locality
}

// BootstrapNodeMetadata is a superset of NodeMetadata, intended to model the entirety of the node metadata