Fix/100, 98, 78

[swhume]

Added minor fixes for issues:

• 100 nested sub-classes
• 98 origins as a list - also opened an issue for DDS to change origin to be a list of dictionaries - generator code now processes both plain dictionaries and a list of dictionaries
• 78 missing significant digits - this requires a USDM file update to point to the latest DSSs - added a workaround in the code for cases where a type=float and displayFormat exists but significant digits is missing, now it will use the displayFormat to create the missing significant digits value

[Copilot]

Pull request overview

This PR addresses three Define generator edge cases: flattening deeply nested observationClass.subClasses into Define-XML v2.1’s flat def:SubClass representation, handling origin provided as either a dict or a list of dicts, and providing a workaround to derive missing SignificantDigits from displayFormat for float items.

Changes:

• Add subclass-flattening logic with a capped nesting depth and accompanying unit/integration tests.
• Update derived-method detection to work with multiple origins.
• Normalize origin input shape (dict vs list) and add a float SignificantDigits fallback derived from displayFormat.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
src/generators/define/tests/test_itemgroups_subclasses.py	Adds coverage for nested subclass flattening and end-to-end XML output expectations.
src/generators/define/post_processing.py	Updates derived-method detection to scan all origins rather than only the first.
src/generators/define/items.py	Normalizes origin as dict/list and adds displayFormat-based SignificantDigits fallback logic.
src/generators/define/itemGroups.py	Implements recursive flattening of nested subclasses with a max depth cap.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

Pull request overview

Copilot reviewed 7 out of 9 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 7 out of 9 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 7 out of 9 changed files in this pull request and generated no new comments.

[Copilot]

Pull request overview

Copilot reviewed 7 out of 9 changed files in this pull request and generated no new comments.

[Copilot]

Pull request overview

Copilot reviewed 7 out of 9 changed files in this pull request and generated no new comments.

[Copilot]

Pull request overview

Copilot reviewed 7 out of 9 changed files in this pull request and generated no new comments.

[dostiep]

All looks good to me.