Displays a context message for the panel.
    message(panel, options);
    
    
        | panel | string, name of the panel | 
    
        | options | object, message parameters | 
    
 
Returns 
promise that is resolved when message is opened.
Description
Occasionally, you need to lock a panel and display a short message. The 
message method allows you to do just that. The method will slide an overlay at the top of the panel.
The second argument 
options is a map
of properties as follows:
To display the message
Call it again to close the message