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: udp_amplification.rb
    path of file: ./repos/metasploit-framework/modules/auxiliary/scanner/udp
    
    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::Auxiliary::DRDoS
  include Msf::Auxiliary::Report
  include Msf::Auxiliary::UDPScanner

  def initialize
    super(
      'Name'        => 'UDP Amplification Scanner',
      'Description' => 'Detect UDP endpoints with UDP amplification vulnerabilities',
      'Author'      => 'Jon Hart <jon_hart[at]rapid7.com>',
      'License'     
    
  def scanner_postscan(batch)
    batch.each do |shost|
      next unless @results.key?(shost)
      @results[shost].each_pair do |sport, responses|
        report_service(host: shost, port: sport, proto: 'udp', info: responses.inspect, state: 'open')
        vulnerable, proof = prove_amplification(@probe => responses)
        next unless vulnerable
        print_good("#{shost}:#{sport} - susceptible to UDP amplification: #{proof}")
        report_vuln(
          host: shost,
          port: sport,
          proto: 'udp',
          name: 'UDP amplification',
          refs: references
        )
      end
    end
  end