@java.lang.Override
  public int hashCode() {
    if (memoizedHashCode != 0) {
      return memoizedHashCode;
    }
    int hash = 41;
    hash = (19 * hash) + getDescriptor().hashCode();
    if (getReferenceImagesCount() > 0) {
      hash = (37 * hash) + REFERENCE_IMAGES_FIELD_NUMBER;
      hash = (53 * hash) + getReferenceImagesList().hashCode();
    }
    hash = (37 * hash) + PAGE_SIZE_FIELD_NUMBER;
    hash = (53 * hash) + getPageSize();
    hash = (37 * hash) + NEXT_PAGE_TOKEN_FIELD_NUMBER;
    hash = (53 * hash) + getNextPageToken().hashCode();
    hash = (29 * hash) + getUnknownFields().hashCode();
    memoizedHashCode = hash;
    return hash;
  }
<pre>
The next_page_token returned from a previous List request, if any.
</pre>

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

@return The bytes for nextPageToken.
java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/ListReferenceImagesResponse.java