             
             return
         }
+        
         self.handler?.controllerDidChangeContent(controller)
     }
     

            
            return
        }
        self.handler?.controllerWillChangeContent(controller)
    }
    

            sectionIndexTitleForSectionName: sectionName
        )
    }
    
    
    // MARK: Private
    
    @nonobjc
    private var deletedSections = Set<Int>()
    
    @nonobjc
    private var insertedSections = Set<Int>()
}
