In this example https://jsfiddle.net/n5zLkahj/1/ there's a group with 2 children. I want the group row ("My Group") to show multiple items -- similar to the last row "same line". However seems like the API only allows a single data point (see JavaScript LoC 13, 14 in the fiddle).
Important: The data group doesn't necessarily reflect the union of its children.
Thank you so much!
Gil