function accessibilityNodeCallback(accessibilityNode)
        {
            if (this._computedTextSubPane)
                this._computedTextSubPane.setAXNode(accessibilityNode);
            if (this._axNodeSubPane)
                this._axNodeSubPane.setAXNode(accessibilityNode);
        }
@param {?AccessibilityAgent.AXNode} accessibilityNode
@this {WebInspector.AccessibilitySidebarView}