Returns a descriptive name for the extension.
ERROR: Syntax information about ILibLookupExtension.Description may not be in D:\ArcGIS\DotNet\ESRI.ArcGIS.SystemUtility.dll
[C++]
HRESULT get_Description(
BSTR* sDesc
);
[C++]Parameters
sDesc [out, retval] sDesc is a parameter of type BSTR