Is there any way to hook ref replication or destruction?

[panno]

It is not ref T, but the ref itself.

For example, the following:
    
    
    let x = new Object
    proc lambda =
      let y = x # Execute =copy[ref] hook here
    lambda() # Execute =destroy[ref] hook here
    # Execute =destroy[Object] hook here
    
    Run

I am using Nim 2.0.0.

How can I achieve this? Or is there an update planned that would make this 
possible?