@java.lang.Override
    public int getKmsKeyValue() {
      return kmsKey_;
    }
<pre>
Specifies how each object's Cloud KMS customer-managed encryption key
(CMEK) is preserved for transfers between Google Cloud Storage buckets.  If
unspecified, the default behavior is the same as
[KMS_KEY_DESTINATION_BUCKET_DEFAULT][google.storagetransfer.v1.MetadataOptions.KmsKey.KMS_KEY_DESTINATION_BUCKET_DEFAULT].
</pre>

<code>.google.storagetransfer.v1.MetadataOptions.KmsKey kms_key = 8;</code>

@return The enum numeric value on the wire for kmsKey.
java-storage-transfer/proto-google-cloud-storage-transfer-v1/src/main/java/com/google/storagetransfer/v1/proto/TransferTypes.java