public void SetDefaults()
{
_props = _model.CreateBasicProperties();
_props.ContentType = "application/json";
_props.ReplyTo =
_exchange.Name + "." +
Environment.GetEnvironmentVariable("NEST_TAG") + "." +
Environment.GetEnvironmentVariable("NEST_CUSHION_INDEX");
_props.ClearExpiration();
_props.ClearPriority();
_props.Headers = new Dictionary <string, object>();
}