Gets the redirected URL for the current item.
HRESULT GetRedirectedURL( WCHAR wszRedirectedURL, DWORD dwSize, DWORD *pdwLength );
[out] Receives the redirected URL as a Unicode string, not including the terminating NULL.
[in] Size in TCHARs of wszRedirectedURL, not including the terminating NULL.
[out] Receives a pointer to the number of TCHARs written to wszRedirectedURL, not including the terminating NULL.
Returns S_OK if successful, or an error value otherwise.
File URLs are not redirected. This method applies only 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.