StringList value type alternative

AddingStrings.pas

type
  StringList = TArray<string>;

  StringListHelper = record helper for StringList
  public
    procedure Add(const AValue: string);
  end;

{ StringListHelper }

procedure StringListHelper.Add(const AValue: string);
begin
  Self := Self + [AValue];
end;

procedure TForm1.FormCreate(Sender: TObject);
var
  LStrings: StringList;
begin
  LStrings.Add('Test1');
  LStrings.Add('Test2');
  Memo1.Lines.AddStrings(LStrings);
end;