public Builder Or(IokeObject mimic)
            {
                int ix = mustMimic.Count - 1;

                mustMimic[ix] = new TypeChecker.Or(mustMimic[ix], mimic);
                return(this);
            }
            public Builder OrBeNil()
            {
                int ix = mustMimic.Count - 1;

                mustMimic[ix] = new TypeChecker.Or(mustMimic[ix], TypeChecker.Nil);
                return(this);
            }
 public Builder OrBeNil()
 {
     int ix = mustMimic.Count - 1;
     mustMimic[ix] = new TypeChecker.Or(mustMimic[ix], TypeChecker.Nil);
     return this;
 }
 public Builder Or(IokeObject mimic)
 {
     int ix = mustMimic.Count - 1;
     mustMimic[ix] = new TypeChecker.Or(mustMimic[ix], mimic);
     return this;
 }