code: public Blob getBlobFromIdWithMetageneration(
        String bucketName, String blobName, long blobMetageneration) {
      // [START getBlobFromIdWithMetageneration]
      BlobId blobId = BlobId.of(bucketName, blobName);
      Blob blob = storage.get(blobId, BlobGetOption.metagenerationMatch(blobMetageneration));
      // [END getBlobFromIdWithMetageneration]
      return blob;
    }
docs: [VARIABLE 42]