No way to instantiate a Ref variable in a module.

[EkanshdeepGupta]

var x: Ref = new() leads to:

1 | var x: Ref = new()
                    ^
Syntax Error: Parse error.

While var x: Ref leads to:

1 | var x: Ref
        ^^^^^^
Syntax Error: Modules and interfaces cannot have var members.

On the other hand, val x: Ref leads to:

1 | val x: Ref
        ^^^^^^
Type Error: The value x cannot be abstract here. An abstract member can only be declared in an interface.