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: environment_doctor.rb
    path of file: ./repos/capistrano/lib/capistrano/doctor
    
    the code of the file until where you have to start completion: require "capistrano/doctor/output_helpers"

module Capistrano
  module Doctor
    class EnvironmentDoctor
      include 
    
      def call
        title("Environment")
        puts <<-OUT.gsub(/^\s+/, "")
          Ruby     #{RUBY_DESCRIPTION}
          Rubygems #{Gem::VERSION}
          Bundler  #{defined?(Bundler::VERSION) ? Bundler::VERSION : 'N/A'}
          Command  #{$PROGRAM_NAME} #{ARGV.join(' ')}
        OUT
      end