set_message_id
Description:
Sets the specified Message-Id reference from the References.
Parameters:
| this | |
| index | 
           the index of the message id  | 
      
| msgid | 
           the message id  | 
      
Sets the specified Message-Id reference from the References.
| this | |
| index | 
           the index of the message id  | 
      
| msgid | 
           the message id  |