docs: protected void addBookBaseFilesAndImages(final BuildData buildData) throws BuildProcessingException {
          final String pressgangWebsiteJS = buildPressGangWebsiteJS(buildData);
  
          addToZip(buildData.getBookImagesFolder() + "icon.svg", ResourceUtilities.resourceFileToByteArray("/", "icon.svg"), buildData);
          addToZip(buildData.getBookFilesFolder() + "pressgang_website.js", pressgangWebsiteJS, buildData);
      }