You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: arch.rb
    path of file: ./repos/rust-raspberrypi-OS-tutorials/19_kernel_heap/tools/translation_table_tool
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

# SPDX-License-Identifier: MIT OR Apache-2.0
#
# Copyright (c)
    
    def set_lvl3_entry(desc, output_addr, attributes)
        desc.output_addr = output_addr
        desc.af = Stage1PageDescriptor::AF::TRUE
        desc.type = Stage1PageDescriptor::Type::PAGE
        desc.valid = Stage1PageDescriptor::Valid::TRUE

        set_attributes(desc, attributes)
    end