VirtualRenderStack

Allows on-demand rendering for plain datasets.

getItemNode	returns HTML element of the item
render	renders the specified item or the whole component
showItem	scrolls the component to make the specified item visible

onAfterRender	occurs immediately after the component has been rendered
onBeforeRender	occurs immediately before the component has been rendered

datafetch	defines the number of records that will be loaded during each dynamic loading request
loadahead	how the number of records that need to be loaded in addition to mandatory ones during each dynamic loading request

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