Information about a group of rows.
Whether a group is collapsed.
Number of rows in the group.
A unique key used to identify the group. This key can be used in calls to DataView collapseGroup() or expandGroup().
Sub-groups that are part of the group.
Grouping level, starting with 0.
Rows that are part of the group.
Formatted display value of the group.
GroupTotals, if any.
Grouping value.
Compares two Group instances.
Group instance to compare to. todo: this is on the prototype (NonDataRow()) instance, not Group, maybe doesn't matter?
boolean