extensionMap.put("odp", "pdf");
        extensionMap.put("otp", "pdf");
        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());
    }

    /**

    <glob pattern="*.vss"/>
    <glob pattern="*.vsw"/>
    <sub-class-of type="application/x-tika-msoffice"/>
  </mime-type>

  <mime-type type="application/vnd.ms-visio.drawing">
    <_comment>Office Open XML Visio Drawing (macro-free)</_comment>
    <glob pattern="*.vsdx"/>
    <sub-class-of type="application/x-tika-visio-ooxml"/>
  </mime-type>
  <mime-type type="application/vnd.ms-visio.template">