<Box sx={{ minHeight: 200, minWidth: 350 }}>
  <RichTreeView
    items={MUI_X_PRODUCTS}
    defaultExpandedItems={['pickers']}
    defaultSelectedItems={'pickers'}
    slots={{ item: CustomTreeItem }}
    isItemDisabled={(item) => Boolean(item?.disabled)}
    isItemEditable={(item) => Boolean(item?.editable)}
    experimentalFeatures={{
      labelEditing: true,
    }}
  />
</Box>
<StatusLegend />