public static void Execute()
{
// Open closed
var builder = new PersonBuilderFunctional().SetName("TTTT").SetProfession("Soft").Build();
// open closed with generics and inheritence
var builder1 = new PersonBuilderFunctional1().SetName("TTTT").SetProfession("Soft").Build();
}
public static PersonBuilderFunctional1 SetProfession(this PersonBuilderFunctional1 builder, string profession)
{
builder.Do(p => p.Position = profession);
return(builder);
}