public static com.google.cloud.vmmigration.v1.ListGroupsRequest parseFrom(
      com.google.protobuf.ByteString data,
      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
      throws com.google.protobuf.InvalidProtocolBufferException {
    return PARSER.parseFrom(data, extensionRegistry);
  }
<pre>
Optional. the order by fields for the result.
</pre>

<code>string order_by = 5 [(.google.api.field_behavior) = OPTIONAL];</code>

@return The bytes for orderBy.
java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/ListGroupsRequest.java