Required. The project and location for which to retrieve BackupPlanRevisions information. Format: projects/{project}/locations/{location}/backupPlans/{backup_plan}. In Google Cloud Backup and DR, locations map to Google Cloud regions, for example us-central1.

Optional. The maximum number of BackupPlans to return in a single response. If not specified, a default value will be chosen by the service. Note that the response may include a partial list and a caller should only rely on the response's next_page_token to determine if there are more instances left to be queried.

Optional. The value of next_page_token received from a previous ListBackupPlans call. Provide this to retrieve the subsequent page in a multi-page list of results. When paginating, all other parameters provided to ListBackupPlans must match the call that provided the page token.