```ruby
module Asterisk

  class Event
    include Asterisk::MessageHelper
    def self.parse(str)
      parse_lines(str)
    end
  end
end```

Load dependency required by Asterisk::Event
user
```ruby
require File.expand_path(File.dirname(__FILE__)) + "/message_helper"

module Asterisk
  class Event
    include Asterisk::MessageHelper
    def self.parse(str)
      parse_lines(str)
    end
  end
end
```
assistant