Const ExperimentalFor instrumentation that tracks user behavior during user sessions, a session.start event MUST be emitted every time a session is created. When a new session is created as a continuation of a prior session, the session.previous_id SHOULD be included in the event. The values of session.id and session.previous_id MUST be different.
When the session.start event contains both session.id and session.previous_id fields, the event indicates that the previous session has ended. If the session ID in session.previous_id has not yet ended via explicit session.end event, then the consumer SHOULD treat this continuation event as semantically equivalent to session.end(session.previous_id) and session.start(session.id).
This event is experimental and is subject to breaking changes in minor releases of @opentelemetry/semantic-conventions.
Indicates that a new session has been started, optionally linking to the prior session.