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[I] SdkSseMetadata

Metadata about a server-sent event (SSE, text/event-stream) body or response.

Kept separate from SdkStreamMetadata because SSE, streaming, and events are modeled by distinct TypeSpec libraries (@typespec/sse, @typespec/http, and @typespec/events). Present alongside streamMetadata when the body/response is an SSE stream; absent for non-event streams such as JSONL.

PropertyTypeDescription
eventsSdkSseEventMetadata[]Per-event metadata, one entry per variant of the streamed @events union.