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: malformed_packet.rb
    path of file: ./repos/metasploit-framework/lib/msf/core/exploit/remote/ssh/auth_methods
    
    the code of the file until where you have to start completion: # -*- coding: binary -*-

module Msf::Exploit::Remote::SSH
module AuthMethods
module MalformedPacket

  #
  # https://tools.ietf.org/rfc/rfc4252.txt
  # https://tools.ietf.org/rfc/rfc4253.txt
  #
  class Net::SSH::Authentication::Methods::MalformedPacket < Net::SSH::Authentication::Methods::Abstract
    def authenticate(service_name, username, password = nil)
      debug { 'Sending SSH_MSG_USERAUTH_REQUEST (publickey)' }

      # Corrupt everything after auth method
      send_message(userauth_request(
=begin
        string    user name in ISO-10646 UTF-8 encoding [RF
    
    def authenticate(service_name, username, password = nil)
      debug { 'Sending SSH_MSG_USERAUTH_REQUEST (publickey)' }

      # Corrupt everything after auth method
      send_message(userauth_request(
=begin
        string    user name in ISO-10646 UTF-8 encoding [RFC3629]
        string    service name in US-ASCII
        string    "publickey"
        boolean   FALSE
        string    public key algorithm name
        string    public key blob
=end
        username,
        service_name,
        'publickey',
        Rex::Text.rand_text_english(8..42)
      ))

      # SSH_MSG_DISCONNECT is queued
      begin
        message = session.next_message
      rescue Net::SSH::Disconnect
        debug { 'Received SSH_MSG_DISCONNECT' }
        return true
      end