partial signature (of P2SH) in Bitcore. howto? Using pybitcointools, it is easy get partial signatures of a p2sh using the multisign function. Then, these can be communicated around to the several controllers of the p2sh address.

Using bitcore, I can sign a p2sh (using ... .sign(privkey)) but I do not manage to get a partial signature object, separate of the transaction itself, which I could send to other owners of the p2sh address (who could be using pybitcointools for instance).

How do you go about getting partial signatures of p2sh in bitcore please? 
(What am I getting wrong?)

Thanks
Found out here:

var signature = tx.getSignatures(privKey)[0].signature;


gives you the signature associate with the private key!