Function grin_wallet_libwallet::api_impl::owner::context_is_invoice

pub fn context_is_invoice<'a, L, C, K>(
    wallet_inst: Arc<Mutex<Box<dyn WalletInst<'a, L, C, K>>>>, 
    keychain_mask: Option<&SecretKey>, 
    slate: &Slate
) -> Result<bool, Error> where
    L: WalletLCProvider<'a, C, K>,
    C: NodeClient + 'a,
    K: Keychain + 'a, 

return whether slate was an invoice tx