API Reference > ui-components > PropertyGrid > FlatGridItemBase FlatGridItemBase Interface Beta Base immutable data structure defining common methods and properties for categories and categorized properties Methods Name Description getChildren(): FlatGridItem[] getDescendantsAndSelf(): FlatGridItem[] getLastVisibleDescendantOrSelf(): FlatGridItem getVisibleDescendantsAndSelf(): FlatGridItem[] Properties Name Type Description depth Readonly number isExpanded Readonly boolean isLastInRootCategory Readonly boolean key Readonly string label Readonly string lastInNumberOfCategories Readonly number parentCategorySelectionKey Readonly undefined | string parentSelectionKey Readonly undefined | string selectionKey Readonly string type Readonly FlatGridItemType Defined in ui/components/src/ui-components/propertygrid/internal/flat-items/FlatGridItem.ts Line 17 Last Updated: 12 June, 2024