Gets the redirected URL for the current item.
HRESULT GetRedirectedURL( WCHAR wszRedirectedURL, DWORD dwSize, DWORD *pdwLength );
[out] Returns the re-directed URL as a null-terminated, Unicode string not including NULL.
[in] Size in TCHARs of wszRedirectedURL.
[out] Returns a pointer to the number of TCHARs written to wszRedirectedURL not including NULL.
Returns S_OK if successful, or an error value otherwise.
File URL is not redirected. This method only applies to a content source of HTTP.
If this method is implemented, the URL that is passed to ISearchProtocol::CreateAccessor will be redirected to the value returned by this method. All subsequent relative URL links will be processed based on the redirected URL.