Optional. An expression for filtering Examples. For annotated
datasets that have annotation spec set, filter by
annotation_spec.display_name is supported. Format
"annotation_spec.display_name = {display_name}"
Optional. A token identifying a page of results for the server
to return. Typically obtained by [ListExamplesResponse.next_p
age_token][google.cloud.datalabeling.v1beta1.ListExamplesResp
onse.next_page_token] of the previous
[DataLabelingService.ListExamples] call. Return first page if
empty.
