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: halt.rb
    path of file: ./repos/vagrant/plugins/guests/solaris/cap
    
    the code of the file until where you have to start completion: # Copyright (c) HashiCorp, Inc.
# SPDX-License-Identifier: BUSL-1.1

module VagrantPlugins
  module GuestSolaris
    module Cap
      class Halt
        def self
    
        def self.halt(machine)
          # There should be an exception raised if the line
          #
          #     vagrant::::profiles=Primary Administrator
          #
          # does not exist in /etc/user_attr. TODO
          begin
            machine.communicate.execute(
              "#{machine.config.solaris.suexec_cmd} /usr/sbin/shutdown -y -i5 -g0")
          rescue IOError, Vagrant::Errors::SSHDisconnected
            # Ignore, this probably means connection closed because it
            # shut down.
          end
        end
      end