static void Main(string region = null,
string session = null,
string package = null,
string project = null,
string[] args = null)
{
switch (region)
{
case "OO1":
Basic.RunStuff(null);
break;
case "OO2":
Interfaces.RunStuff(null);
break;
case "OO3":
AbstractClasses.RunStuff(null);
break;
case "OO4":
Polymorphism.RunStuff(null);
break;
default:
break;
}
}