extensionMap.put("sxi", "pdf");
        extensionMap.put("ppt", "pdf");
        extensionMap.put("pptx", "pdf");
        // Drawing Formats
        extensionMap.put("odg", "svg");
        extensionMap.put("otg", "svg");

        extractorMap.put("pdf", new PdfExtractor());
        extractorMap.put("svg", new XmlExtractor());
    }

    /**
     * Initializes the extractor by starting the office manager.
     *

        <match type="string" offset="30"
               value="mimetypeapplication/vnd.oasis.opendocument.graphics-template"/>
      </match>
    </magic>
    <glob pattern="*.otg"/>
    <sub-class-of type="application/zip"/>
  </mime-type>

  <mime-type type="application/vnd.oasis.opendocument.image">
    <alias type="application/x-vnd.oasis.opendocument.image"/>