/// <summary>
/// Generates a view that orders events that arrive out-of-order, using timestamp-values
/// provided by an expression, and by comparing that timestamp value to engine system time.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="esperQuery">The esper query.</param>
/// <param name="property">The property to use for the timestamp.</param>
/// <param name="timePeriod">the time period specifying the time interval that an arriving event should maximally be held, in order to consider older events arriving at a later time</param>
/// <returns></returns>
/// <exception cref="System.ArgumentException">at least one property must be provided</exception>
public static EsperQuery <T> TimeOrdered <T>(this EsperQuery <T> esperQuery, string property, TimeSpan timePeriod)
{
return(esperQuery.FilterView(() => View.Create("time_order",
new PropertyValueExpression(property),
timePeriod.ToTimePeriodExpression())));
}