NotificationService.queryNumberOfNotifications Method
        
 Gets the number of notifications corresponding to the query criteria.
 
         
        Parameters
        
            - filter
            
 
            - 
                
Type: array
An array of notification query filter rules to be used. 
        
        Return Value
        
Type: jQuery.Promise
        
Value: int
        
Element Value: int
        
A promise object that is resolved when the call is complete.
 If successful, an int containing the number of notifications that match the filter is returned.