AbortController for aborting vtk.js file fetch requests

I am loading dozens of STL files:

var read = vtkSTLReader.newInstance()
read.setUrl( files[i] , readOptions).then(......

Occasionally as a user I’d like to interrupt this process after the Ioop over the files completes, but before they are all actually loaded. Is there currently any way to do this in vtk.js?