code: public static GoogleCloudStorageItemInfo createNotFound(StorageResourceId resourceId) {
      checkArgument(resourceId != null, "resourceId must not be null");
      // Bucket or StorageObject.
      return new GoogleCloudStorageItemInfo(
          resourceId,
          /* creationTime= */ 0,
          /* size= */ -1,
          /* location= */ null,
          /* storageClass= */ null);
    }
docs: Helper for creating a "not found" GoogleCloudStorageItemInfo for a StorageResourceId.