Expand functionality (row grouping ) is not working as expected as given in example

[arunkumar8080]

below props are passing to table component still in DOM there is no change

expandColumnKey={expandColumnKey}
onRowExpand={onRowExpand}
onExpandedRowsChange={onExpandedRowsChange}
expandIcon={+}
expandedRowRender={row => <p style={{ margin: 0 }}>{row.code}

}