Bulk import of ascii files

Hello good ppl, need some help with importing a bunch of .ascii files in batch rather than using import->XNALara/XPS.
I have seen a similar script for importing .obj files from a folder which uses the following:
bpy.ops.import_scene.psk(filepath = path_to_file)
However for .ascii files (I am using the XNALara/XPS addon for opening .ascii files) I am not able to figure out the right parameters… I have tried Import_ and Import_scene_ with various combinations but no luck. Any idea what I should be using?

Anyone?
Checking the blender Python API I can see
bpy.ops.import_scene. fbx
bpy.ops.import_scene. obj
bpy.ops.import_scene. x3d

Is there a similar one for ascii files?