Directory tag in vasp calculator, ase.3.20.1

Dear all, I’m using ase 3.20.1 and it is saying there is no directory tag for Vasp calculator. Is it a bug or it is not in 3.20.1, I cannot update ase in my university cluster. That directory tag is very helpful, is there any way to add some thing in source code which is already in my cluster.

Thanks in advance