public abstract class NRootBlock<T> : NVFlowBlockContainer<T>, Nevron.Nov.Dom.INDomDeepEquals, Nevron.Nov.Dom.INDomDeeplyCloneable, Nevron.Nov.INDeeplyCloneable, INRootRangeTextElement, INRootTextMeasureArrangeElement, INVRulerTextElement, Nevron.Nov.UI.INInputNode where T: NBlock