public static Builder newBuilder(
          com.google.storagetransfer.v1.proto.TransferTypes.AzureBlobStorageData
                  .FederatedIdentityConfig
              prototype) {
        return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
      }
<pre>
Required. The tenant (directory) ID of the application with federated
credentials.
</pre>

<code>string tenant_id = 2 [(.google.api.field_behavior) = REQUIRED];</code>

@return The bytes for tenantId.
java-storage-transfer/proto-google-cloud-storage-transfer-v1/src/main/java/com/google/storagetransfer/v1/proto/TransferTypes.java