RepeaterGridTemplateAdorner.splitSelectedCell Method
        
 Split the selected template cell.
 
         
        Parameters
        
            - templateCell
            
 
            - 
                
Type: Array
ElementType: TemplateCellViewModel
The set of template cells to split. 
            - isHorizontal
            
 
            - 
                
Type: Boolean
Split horizontally if true, vertically otherwise. 
        
        Return Value
        
Type: array
        
ElementType: TemplateCellViewModel
        
The new set of templateCell.