The VS Code BPMN editor doesn't allow type parameters to entered for e.g. collections

The VS Code BPMN editor gives an error "Invalid Character in Name:<" when trying to enter a type parameter e.g. java.util.ArrayList<String>

When using multi-instance processes an ArrayList or similar collection is needed. This needs to be parameterized. The workaround is to edit the BPMN file with a text editor.