docs: A comment for field `filter` in message `.google.cloud.discoveryengine.v1beta.ListSessionsRequest` is changed
docs: A comment for field `order_by` in message `.google.cloud.discoveryengine.v1beta.ListSessionsRequest` is changed
docs: A comment for field `session` in message `.google.cloud.discoveryengine.v1beta.SearchRequest` is changed
docs: A comment for field `query` in message `.google.cloud.discoveryengine.v1beta.Session` is changed
docs: A comment for field `answer` in message `.google.cloud.discoveryengine.v1beta.Session` is changed
docs: A comment for field `query_id` in message `.google.cloud.discoveryengine.v1beta.Query` is changed
PiperOrigin-RevId: 787001221
feat: support writing user events for blended engines
feat: support cancelling import operations
feat: add custom model list API
feat: add provision project API
docs: keep the API doc up-to-date with recent changes
PiperOrigin-RevId: 638007679