/// <inheritdoc cref="IMqttClientConfigBuilder.UseExtendedAuthenticationExchangeHandler(IMqttExtendedAuthenticationExchangeHandler)" /> public IMqttClientConfigBuilder UseExtendedAuthenticationExchangeHandler( IMqttExtendedAuthenticationExchangeHandler handler) { Check.NotNull(handler, nameof(handler)); _builder.WithExtendedAuthenticationExchangeHandler(handler); return(this); }