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: channel.rb
    path of file: ./repos/metasploit-framework/lib/rex/post/meterpreter
    
    the code of the file until where you have to start completion: # -*- coding: binary -*-

require 'rex/post/meterpreter/inbound_packet_handler'

module Rex
module Post
module Meterpreter

#
# The various types of channels
#
CHANNEL_CLASS_
    
  def initialize(client, cid, type, flags, packet, **_)
    self.client = client
    self.cid    = cid
    self.type   = type
    self.flags  = flags
    @mutex  = Mutex.new

    # Add this instance to the list
    if (cid and client)
      client.add_channel(self)
    end