get_message_id
Description:
Gets the specified Message-Id reference from the References.
Parameters:
| this | |
| index | 
           the index of the message id  | 
      
Returns:
| 
           the Message-Id reference from the References.  | 
      
Gets the specified Message-Id reference from the References.
| this | |
| index | 
           the index of the message id  | 
      
| 
           the Message-Id reference from the References.  |