* application/vnd.oasis.opendocument.spreadsheet=ods<br>
     * application/vnd.oasis.opendocument.presentation=odp<br>
     * application/pdf=pdf<br>
     * application/x-fictionbook+xml=fb2<br>
     * application/e-pub+zip=epub<br>
     * application/x-ibooks+zip=ibooks<br>
     * text/plain=txt<br>
     * application/rtf=rtf<br>
     * application/vnd.ms-htmlhelp=chm<br>

    /** The key of the message: PDF */
    public static final String LABELS_facet_filetype_pdf = "{labels.facet_filetype_pdf}";

    /** The key of the message: FictionBook */
    public static final String LABELS_facet_filetype_fb2 = "{labels.facet_filetype_fb2}";

    /** The key of the message: EPUB */