/// <summary>
        /// Includes to configuration two of the default TestMethodGenerator(<see cref="NullArgumentMethodTestMethodGenerator"/>, <see cref="NullArgumentConstructorTestMethodGenerator"/>).
        /// </summary>
        /// <param name="configurator">The instance of configuration.</param>
        /// <returns>The instance of configuration.</returns>
        public static ITestMethodGeneratorConfigurator IncludeBuiltinGenerators(this ITestMethodGeneratorConfigurator configurator)
        {
            var testGeneratorConfigurator = configurator as TestMethodGeneratorConfigurator;

            configurator.AddGenerator<NullArgumentMethodTestMethodGenerator>()
                .AddGenerator<NullArgumentConstructorTestMethodGenerator>();

            return configurator;
        }
 /// <summary>
 /// Includes <see cref="NullArgumentMethodTestMethodGenerator"/> to configuration.
 /// </summary>
 /// <param name="configurator">The instance of configuration.</param>
 /// <returns>The instance of configuration.</returns>
 public static ITestMethodGeneratorConfigurator IncludeNullArgumentMethodTestMethodGenerator(this ITestMethodGeneratorConfigurator configurator)
 {
     configurator.AddGenerator<NullArgumentMethodTestMethodGenerator>();
     return configurator;
 }