How to append a collection with python in 2.80

I managed to import object in Python but couldn’t find info on how to append a whole collection.

Like so::

def execute(self, context):
		path = os.path.dirname(__file__) + "/NMS/LightRigs_02.blend\\Object\\"
		object_name = "Old_backdrop"
		bpy.ops.wm.append(filename=object_name, directory=path)
		return {"FINISHED"}

Any idea how that goes for collection? Let’s say I want to append Backdrop_01.
(Api documentation : https://docs.blender.org/api/blender2.8/bpy.ops.wm.html?highlight=wm%20append#bpy.ops.wm.append )

Outliner

Ahw it was so easy, It’s nearly the same:

	def execute(self, context):
		path = os.path.dirname(__file__) + "/NMS/LightRigs_02.blend\\Collection\\"
		object_name = "Backdrop_01"
		bpy.ops.wm.append(filename=object_name, directory=path)
		return {"FINISHED"}