public Builder mergeNotificationConfig(
          com.google.storagetransfer.v1.proto.TransferTypes.NotificationConfig value) {
        if (notificationConfigBuilder_ == null) {
          if (((bitField0_ & 0x00000008) != 0)
              && notificationConfig_ != null
              && notificationConfig_
                  != com.google.storagetransfer.v1.proto.TransferTypes.NotificationConfig
                      .getDefaultInstance()) {
            getNotificationConfigBuilder().mergeFrom(value);
          } else {
            notificationConfig_ = value;
          }
        } else {
          notificationConfigBuilder_.mergeFrom(value);
        }
        if (notificationConfig_ != null) {
          bitField0_ |= 0x00000008;
          onChanged();
        }
        return this;
      }
<pre>
Notification configuration.
</pre>

<code>.google.storagetransfer.v1.NotificationConfig notification_config = 10;</code>
java-storage-transfer/proto-google-cloud-storage-transfer-v1/src/main/java/com/google/storagetransfer/v1/proto/TransferTypes.java