This class is intended to be extended or created via the layout configuration property. See Ext.container.Container.layout for additional details.
An optional extra CSS class that will be added to the container. This can be useful for adding customized styles to the container or any of its children using standard CSS rules. See Ext.Component.ctCls also.
Returns an array of child components either for a render phase (Performed in the beforeLayout method of the layout's base class), or the layout phase (onLayout).
Returns the element into which rendering must take place. Defaults to the owner Container's Ext.AbstractComponent.targetEl.
May be overridden in layout managers which implement an inner element.