public async Task RfcAway(string awaytext) => await WriteLine(Rfc2812.Away(awaytext));
public async Task RfcAway() => await WriteLine(Rfc2812.Away());
public async Task RfcAway(string awaytext, Priority priority) => await WriteLine(Rfc2812.Away(awaytext), priority);
public async Task RfcAway(Priority priority) => await WriteLine(Rfc2812.Away(), priority);