Hide Separator if only one group

[wilpar]

Is your feature request related to a problem? Please describe.
I run into cases where there may or not be multiple groups in a stream. In this case, I would like to NOT put a header (groupSeparatorBuilder) on the single group, as it's redundant.

Describe the solution you'd like
Perhaps a boolean hideSingleGroupSeparator, which if set to true, would ignore the groupSeparatorBuilder completely in cases where there was only one group.

[iksivee]

Hello,
you can do omething like this:

groupHeaderBuilder: (element) { return listElements.last != element ? groupDivider() : SizedBox.shrink(); }