def METHOD_NAME():
    """Yield all stack paths and channels project"""
    for material in get_document_structure()["materials"]:
        material_name = material["name"]
        for stack in material["stacks"]:
            stack_name = stack["name"]
            if stack_name:
                stack_path = [material_name, stack_name]
            else:
                stack_path = material_name
            for channel in stack["channels"]:
                yield stack_path, channel