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GetTelemetrySubscriptionsRequestV0 {
 	ClientInstanceId uuid    			// UUID4 unique for this client instance.
										// Must be set to Null on the first request, and to the
										// returned ClientInstanceId from the first response
										// for all subsequent requests to any broker.
}

GetTelemetrySubscriptionsResponseV0 {
 	ThrottleTime int32					// Standard throttling
	ErrorCode int16						// Error code
    ClientInstanceId uuid               // Assigned client instance id if ClientInstanceId was Null in the request, else Null.
    SubscriptionId int32                // Unique identifier for the current subscription set for this client instance.
    AcceptedCompressionTypes Array[int8] // The compression types the broker accepts for PushTelemetryRequest.CompressionType.
                                        // Calculated as a bitmask of (1 << MessageHeaderV2.Attributes.CompressionType).
 	PushIntervalMs int32				// Configured push interval, which is the lowest configured interval in the current subscription set.
	RequestedMetrics Array[string]		// Requested Metrics prefix string match.
										// Empty array: No metrics subscribed.
										// Array[0] empty string: All metrics subscribed.
										// Array[..]: prefix string match

}

PushTelemetryRequestV0 {
	ClientInstanceId uuid    			// UUID4 unique for this client instance, as retrieved in the first GetTelemetrySubscriptionsRequest.
    SubscriptionId int32                // SubscriptionId from the GetTelemetrySubscriptionsResponse for the collected metrics.
	Terminating bool					// Client is terminating.
    CompressionType int8                // Compression codec used for .Metrics (ZSTD, LZ4, Snappy, GZIP, None).
                                        // Same values as that of the current MessageHeaderV2.Attributes.
	Metrics binary						// Format specified by ContentType, possibly compressed.
}

PushTelemetryResponseV0 {
	ThrottleTime int32					// Standard and metric-specific throttling
	ErrorCode int16						// Error code
}