protected override Expression <Func <MsBuildPropertyListAssociation, bool> > FindExisting(MsBuildPropertyListAssociation record) => existing => existing.MsBuildPropertyId == record.MsBuildPropertyId && existing.MsBuildPropertyListId == record.MsBuildPropertyListId;
protected override IEnumerable <object> EnumerateReferences(MsBuildPropertyListAssociation record)
{
yield return(record.MsBuildProperty);
yield return(record.MsBuildPropertyList);
}