Checks whether the feed exists.
HRESULT ExistsFeed( BSTR feedPath, VARIANT_BOOL *exists );
[in] BSTR that specifies the folder path and feed name.
[out, retval] Address of a pointer variable of type VARIANT_BOOL that receives one of the following possible values:
The feed exists.
The feed does not exist.
Returns S_OK if successful, or an error value otherwise.