[5.0.0-rc2] Add null checks to account for owned types in TPT #22587
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Fixes #22576
Description
This is a bug in a new feature. In scenarios with more than 2 levels of TPT with an owned type defined on a derived type some methods will return
null
that we haven't accounted for.Customer Impact
It's hard to estimate how many customers will be impacted, but given the location in the code path it's likely to affect other TPT scenarios apart from the one described above.
How found
Customer reported on RC1.
Test coverage
We were lacking test coverage for complex TPT models. This PR adds a test for the affected scenario.
Regression?
No, new feature in 5.0.
Risk
Low. Code changes just add
null
checks.