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: subsystem.rb
    path of file: ./repos/hrr_rb_ssh/lib/hrr_rb_ssh/connection/channel/channel_type/session/request_type
    
    the code of the file until where you have to start completion: require 'hrr_rb_ssh/connection/request_handler'

module HrrRbSsh
  class Connection
    class Channel
      class ChannelType
        class Session
          class RequestType
            class Subsystem < Reque
    
              def self.run proc_chain, username, io, variables, message, options, session, logger: nil
                context = Context.new proc_chain, username, io, variables, message, session, logger: logger
                handler = options.fetch('connection_channel_request_subsystem', RequestHandler.new {})
                handler.run context

                proc_chain.connect context.chain_proc
              end