@java.lang.Override
    public final Builder setUnknownFields(final com.google.protobuf.UnknownFieldSet unknownFields) {
      return super.setUnknownFields(unknownFields);
    }
<pre>
The next_page_token returned from a previous List request, if any.
</pre>

<code>string page_token = 3;</code>

@param value The bytes for pageToken to set.
@return This builder for chaining.
java-vision/proto-google-cloud-vision-v1p3beta1/src/main/java/com/google/cloud/vision/v1p3beta1/ListProductsInProductSetRequest.java