defaultExpiration property
Duration that static files should be cached by web proxies and browsers.
Only applicable if the corresponding StaticFilesHandler (https://cloud.google.com/appengine/docs/admin-api/reference/rest/v1/apps.services.versions#StaticFilesHandler) does not specify its own expiration time.Only returned in GET requests if view=FULL is set.
Implementation
core.String? defaultExpiration;