@Override public void setDescription(String description) { volumeInfo.setDescription(description); }
@Override public String getDescription() { return volumeInfo.getDescription(); }
@Override public List<String> getAuthors() { return volumeInfo.getAuthors(); }
@Override public void setAuthors(List<String> authors) { volumeInfo.setAuthors(authors); }
@Override public int getPages() { Integer pages = volumeInfo.getPageCount(); if (pages == null) return -1; return pages; }