public static void EstensionMethodForTestClass(this Test testClassInstance)
{
Console.WriteLine("EstensionMethodForTestClass(this Test testClassInstance)");
testClassInstance.TestMethod();
Console.WriteLine(testClassInstance.Date);
}
public static int EstensionMethodForTestClassWithParameter(this Test testClassInstance, string a)
{
Console.WriteLine("EstensionMethodForTestClassWithParameter(this Test testClassInstance, string a)");
return(a.Length);
}