private async Task SendMessageAsync <T>(GatewayOperation op, GatewayEvent?e, T payload)
{
var frame = new GatewaySocketFrame <T>
{
Operation = op,
Event = e,
Payload = payload,
};
await _socket !.SendMessageAsync(frame);
}
private async Task SendMessageAsync <T>(GatewayOperation op, T payload) => await SendMessageAsync(op, null, payload);
