         return measureCell?(dataSource, index, tableView) ?? tableView.rowHeight
     }
 
-    open func cellForRow(at index: Int, tableView: NSTableView, dataSource: UnderlyingCollection) -> NSView? {
-        return createCell?(dataSource, index, tableView) ?? nil
+    open func cellForRow(at index: Int, tableColumn: NSTableColumn?, tableView: NSTableView, dataSource: UnderlyingCollection) -> NSView? {
+        return createCell?(dataSource, index, tableColumn, tableView) ?? nil
     }
 
     open func apply(diff: [CollectionOperation<Int>], to tableView: NSTableView) {

//  THE SOFTWARE.
//

import Foundation
import AppKit
import ReactiveKit

        disposable += tableView.reactive.delegate.feed(
            property: dataSource,
            to: #selector(NSTableViewDelegate.tableView(_:viewFor:row:)),
            map: { (dataSource: UnderlyingCollection?, tableView: NSTableView, tableColumn: NSTableColumn, row: Int) -> NSView? in
                guard let dataSource = dataSource else { return nil }
                return binder.cellForRow(at: row, tableColumn: tableColumn, tableView: tableView, dataSource: dataSource)
            }
        )

