@java.lang.Override
  public com.google.protobuf.ByteString getOrderByBytes() {
    java.lang.Object ref = orderBy_;
    if (ref instanceof java.lang.String) {
      com.google.protobuf.ByteString b =
          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
      orderBy_ = b;
      return b;
    } else {
      return (com.google.protobuf.ByteString) ref;
    }
  }
<pre>
Hint for how to order the results
</pre>

<code>string order_by = 5;</code>

@return The bytes for orderBy.
java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/ListEdgeSlmsRequest.java