/// <summary>
/// Sets the cool program for the thermostat.
/// </summary>
/// <param name="program">Program instance with cool settings per day.</param>
/// <param name="ct">Cancellation token instance.</param>
/// <returns></returns>
public async Task SetProgramCool(ProgramModel program, CancellationToken ct)
{
var json = Newtonsoft.Json.JsonConvert.SerializeObject(program.GetChangedProperties());
var content = new StringContent(json, Encoding.UTF8);
var response = await this.PostAsync <ThermostatResponse>("tstat/program/cool", ct, content);
}