private static IList<Element> Factory( Document doc, string familySymbolName )
{
IList<Element> elements
= GetStructuralColumnSymbolCollector( doc )
.WherePasses(
new ElementParameterFilter(
ParameterFilterRuleFactory.CreateEqualsRule(
new ElementId( BuiltInParameter.SYMBOL_NAME_PARAM ), familySymbolName, true ) ) )
.ToElements();
return elements;
}