private static AttributeType[] AllAttribTypes(Revision<TypedEntity>[] mappedCollection)
{
return mappedCollection.Select(
x => x.Item.Attributes.FirstOrDefault(
y =>
y.AttributeDefinition.AttributeType.Alias == NodeNameAttributeType.AliasValue))
.WhereNotNull()
.Select(x => x.AttributeDefinition.AttributeType)
.ToArray();
}