private void merge(ExtendedProperties repoExtendedProperties, ExtendedProperties columnExtendedProperties)
{
foreach (var extendedProperty in columnExtendedProperties.ToList())
{
if (repoExtendedProperties.Contains(extendedProperty.Name))
{
continue;
}
repoExtendedProperties.Add(extendedProperty);
columnExtendedProperties.Remove(extendedProperty.Name);
}
}