The request message for [EntityTypes.BatchUpdateEntityTypes][google.cl
oud.dialogflow.v2.EntityTypes.BatchUpdateEntityTypes].
The source of the entity type batch. For each entity type in
the batch: - If name is specified, we update an existing
entity type. - If name is not specified, we create a new
entity type.
The collection of entity types to update or create.
Optional. The mask to control which fields get updated.