The response message for
[EntityTypes.ListEntityTypes][google.cloud.dialogflow.cx.v3beta1.EntityTypes.ListEntityTypes].
Attributes:
entity_types (Sequence[google.cloud.dialogflowcx_v3beta1.types.EntityType]):
The list of entity types. There will be a maximum number of
items returned based on the page_size field in the request.
next_page_token (str):
Token to retrieve the next page of results,
or empty if there are no more results in the
list.