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: client.rb
    path of file: ./repos/metasploit-framework/lib/rex/post/mssql/ui/console/command_dispatcher
    
    the code of the file until where you have to start completion: # -*- coding: binary -*-

require 'rex/post/sql/ui/console/command_dispatcher/client'

module Rex
  module Post
    module MSSQL
      module Ui
        
    
          def cmd_query_help
            print_line 'Usage: query'
            print_line
            print_line 'Run a single SQL query on the target.'
            print_line @@query_opts.usage
            print_line 'Examples:'
            print_line
            print_line '    query select @@version;'
            print_line '    query select user_name();'
            print_line '    query select name from master.dbo.sysdatabases;'
            print_line
          end