/// <summary>
/// returns a list of all elevations that are directly or indirectly linked to <c>currentInfo</c>.
/// sometimes one elevation belongs to multiple basic elevations.
/// the return family will contain all of them.
/// </summary>
public static IEnumerable <NetInfo> GetRelatives(this NetInfo netinfo)
{
try {
if (netinfo == null)
{
return(null);
}
HashSet <NetInfo> family = new HashSet <NetInfo>(netinfo.GetDirectlyRelated());
// get elevations that are indirectly linked to currentInfo.
foreach (var netinfo2 in family.ToArray())
{
family.AddRange(netinfo2.GetDirectlyRelated());
}
return(family);
} catch (Exception ex) {
ex.LogException();
return(new[] { netinfo });
}
}
