SmallMultipleGridTemplateAdorner.subscribe Method
        
 Subscribe or unsubscribe an event handler for an event.
 
         
        Parameters
        
            - eventName
            
 
            - 
                
Type: String
Event name. 
            - callback
            
 
            - 
                
Type: Function
Event Handler. 
            - unsubscribe
            
 
            - 
                
Type: Boolean - May be null
(Optional) True to unsubscribe. 
            - once
            
 
            - 
                
Type: Boolean - May be null
 (Optional) True to unsubscribe automatically after running once.