def filemsg type, data, wait = true
      cmd_filemsg type, data
      return false unless wait_for(last_label) if wait
      return @response_args
    end
def filemsg type, data, wait = true
      cmd_filemsg type, data
      return false unless wait_for(last_label) if wait
      return @response_args
    end
Set file content (base64 encded) as message for the massive send list
  data file contenten base64 encoded
 Available types:
  * :jpeg        image JPEG
  * :gif         image GIF
  * :midi        polyfonic melody MIDI
  * :sp_midi     polyfonic melody SP-MIDI
  * :amr         sound AMR
  * :mp3         sound MP3
  * :gpp         video 3GP
  * :java        application JAVA
  * :symbian     application Symbian