public com.google.protobuf.ByteString getOrderByBytes() {
      java.lang.Object ref = orderBy_;
      if (ref instanceof 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>
Comma-separated list of fields that specify the order of the results.
Default sorting order for a field is ascending. To specify descending order
for a field, append a "desc" suffix.
If not specified, the results are returned in an unspecified order.
</pre>

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

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