public static com.google.cloud.vision.v1p4beta1.ListProductsInProductSetRequest
      getDefaultInstance() {
    return DEFAULT_INSTANCE;
  }
<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-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/ListProductsInProductSetRequest.java