Hi, Nuno.
It's a missing feature of the current version. I started work on a
branch some time ago in order to implement a generic "get" method that
would return hashes for all get* methods in the SOAP API. Unfortunately
I stopped working on that.
I'll try to restart work in the branch as soon as I can.
Please, bear with me.
Gustavo.
(BTW, by your name I suppose we could write in Portuguese, couldn't we?)