private void DumpHostedElements(
Dictionary<ElementId, List<ElementId>> ids)
{
foreach( ElementId idHost in ids.Keys )
{
string s = string.Empty;
foreach( ElementId id in ids[idHost] )
{
if( 0 < s.Length )
{
s += ", ";
}
s += ElementDescription( id );
}
int n = ids[idHost].Count;
Debug.Print(
"{0} hosts {1} opening{2}: {3}",
ElementDescription( idHost ),
n, Util.PluralSuffix( n ), s );
}
}