/// <summary>
/// Matches the specified regular expression pattern.
/// </summary>
/// <typeparam name="TViewModel">The type of the view model.</typeparam>
/// <typeparam name="TPropertyValue">The type of the property value.</typeparam>
/// <param name="instance">The instance.</param>
/// <param name="pattern">The pattern.</param>
/// <returns></returns>
public static IFluentContinuation <TViewModel, TPropertyValue> Matching <TViewModel, TPropertyValue>(
this IFluentOperator <TViewModel, TPropertyValue> instance, string pattern)
where TViewModel : ViewModelBase
where TPropertyValue : IComparable <string>, IEquatable <string>
{
var implementerInstance = (FluentImplementer <TViewModel, TPropertyValue>)instance;
implementerInstance.EnsureContextCurrentPropertyIsNotNull();
implementerInstance.AddToken(ExpressionNode.MatchingProperty(implementerInstance.Context.CurrentProperty, pattern));
return((IFluentContinuation <TViewModel, TPropertyValue>)instance);
}