Problem using upload_file method.

[valery]

Hello,
i'm confuse, because when i try to use the upload_file method in my php script, i have this error :
Fatal error: Call to undefined method CloudKey_Api::upload()

I use the last version of cloudkey-php.
If you have any idea to point me in the right direction... thanks a lot !
(nota : the media methods works well)
Valéry