Stores information about the edges in a group.
An edge is considered to be in a group if its first vertex is in the group.
상속: Object
    GetGroupRowID
    (
        GroupEdgeInfo oGroupEdgeInfo
    )
    {
        Debug.Assert(oGroupEdgeInfo != null);
        Debug.Assert(oGroupEdgeInfo.GroupInfo.RowID.HasValue);
        AssertValid();

        return (oGroupEdgeInfo.GroupInfo.RowID.Value);
    }
    GetGroupName
    (
        GroupEdgeInfo oGroupEdgeInfo
    )
    {
        AssertValid();

        return ( (oGroupEdgeInfo.GroupInfo == null) ?
            null : oGroupEdgeInfo.GroupInfo.Name );
    }