RepeaterGroupInstance.loadItems Method
        
 Loads items for the group, requesting additional data to do so if necessary.
 
         
        Parameters
        
            - columnsRequested
            
 
            - 
                
Type: Number (Integer)
The number of data columns to generate items for. 
            - rowsRequested
            
 
            - 
                
Type: Number (Integer)
The number of data rows to generate items for. 
        
        Return Value
        
Type: jQuery.Promise
        
A promise object which will be resolved when the items for the requested number of columns and rows is complete.