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Gets the child groups of the current group.
Child groups are nested outline groups whose range is contained within the current group. Use this property to traverse the outline hierarchy after retrieving a group from RowGroupInfo or ColumnGroupInfo.
List<IGroupInfo> Children { get; }
ReadOnly Property Children As List(Of IGroupInfo)
worksheet.Range["1:4"].Group();
worksheet.Range["2:3"].Group();
IGroupInfo group = worksheet.Outline.RowGroupInfo[0];
List<IGroupInfo> children = group.Children;