+ fn sign_closing_transaction<T: secp256k1::Signing>(&self, channel_value_satoshis: u64, channel_funding_redeemscript: &Script, closing_tx: &Transaction, secp_ctx: &Secp256k1<T>) -> Result<Signature, ()> {
+ Ok(self.inner.sign_closing_transaction(channel_value_satoshis, channel_funding_redeemscript, closing_tx, secp_ctx).unwrap())
+ }
+