pub fn pubkeys_of_multiple_signers(
matches: &ArgMatches<'_>,
name: &str,
wallet_manager: &mut Option<Arc<RemoteWalletManager>>
) -> Result<Option<Vec<Pubkey>>, Box<dyn Error>>
pub fn pubkeys_of_multiple_signers(
matches: &ArgMatches<'_>,
name: &str,
wallet_manager: &mut Option<Arc<RemoteWalletManager>>
) -> Result<Option<Vec<Pubkey>>, Box<dyn Error>>