Link model collection in another file

LinkModel.py

import bpy
import os

rig_file = bpy.data.filepath
model_file = rig_file.replace('.Rig.', '.Model.')

if not os.path.exists(model_file):
    raise Exception("Model file does not exist.")
    
if bpy.data.collections['Model'] is not None:
    raise Exception("Model already linked.")

print("Linking model from '{}'.".format(model_file))

bpy.ops.wm.link(
    directory=model_file + "/Collection/", 
    filename='Model', 
    link=True, 
    instance_collections=True,
    autoselect=True)