Grid Virtual Scrolling

Hi, Could you please help me to clarify if this is intentional behavior of Grid component do not accept external className?

- classNames concatenated when scrollable set to scrollable (default)

- classNames are not concatenated when scrollable set to virtual

Digged down to the library ..../Grid.js found that the issue is in line 426

return (React.createElement("div", { style: wrapperStyle, className: 'k-widget k-grid'
+ (this.props.scrollable === 'virtual' ? ' k-grid-virtual' : ''
+ (this.props.className ? ' ' + this.props.className : '')) },

Thanks,

Alex.