pub fn fn_get_client_key_share(
client_extensions: &Vec<ClientExtension>,
group: &NamedGroup,
) -> Result<Option<Vec<u8>>, FnError>
pub fn fn_get_client_key_share(
client_extensions: &Vec<ClientExtension>,
group: &NamedGroup,
) -> Result<Option<Vec<u8>>, FnError>