public static IKeyMatchBuilder AddContainsMatcher(this IKeyMatchBuilder builder, string contains)
 {
     return(builder.Add(new ContainsMatcher(contains)));
 }
 public static IKeyMatchBuilder AddRegexMatcher(this IKeyMatchBuilder builder, string regularExpression,
                                                RegexOptions options)
 {
     return(builder.Add(new RegexMatcher(regularExpression, options)));
 }