* This is a multi-pane, application-oriented UI layout style that supports multiple nested panels, automatic bars* - When using the split option, the layout will automatically insert a {@link Ext.resizer.Splitter}* is used in conjunction with {@link #split}. By default, when specifying {@link #split}, the region* can be dragged to be resized. Set this option to false to show the split bar but prevent resizing.} else if (childContext.isVert || (childContext.isCenter && childContext.collapseAxis === 'vert')) {