OUString SAL_CALL MSPUBImportFilter::detect(Sequence<PropertyValue>& Descriptor)
 {
   OUString sTypeName;
   sal_Int32 nLength = Descriptor.getLength();
   sal_Int32 location = nLength;
   const PropertyValue *pValue = Descriptor.getConstArray();
   Reference <XInputStream> xInputStream;
   for (sal_Int32 i = 0 ; i <nLength; i++)
     if (pValue[i].Name == "TypeName")
       location=i;
     else if (pValue[i].Name == "InputStream")
       pValue[i].Value>>= xInputStream;