Can somehow a method from base class return child class?

Question

I\'ll give an example, so you can better understand what i mean:

public class Base
{
      public Base Common()
      {
          return this;
      }
}

pub         


        

Answer 1

Have Base be abstract and not implementing XMethod and have the classes overriding XMethod should do it I guess?

public abstract class Base
{
      public Base Common()
      {
          return this;
      }

     public abstract T XMethod();
}

public class XBase : Base
{

     public override XBase XMethod()
     {
          return this;
     }
}