Code gen edge case: when a XSD type uses string enums as the item type for an XSD List type, a bug occurs with enum generation

[mamift]

Code gen edge case: when a XSD type uses string enums as the item type for an XSD List type, a bug occurs with enum generation:

• No enum definition is generated
• The setter for an element or attribute of said type refers to a non-existent enum_name.TypeDefinition static property.

found when testing Library of congress ALTO document schema.