- Refactored delta creation in test files to use createDelta() pattern
- Replaced direct Delta instantiations with fluent builder API
- Updated relationship deltas to use setProperty with proper entity context
- Ensured all tests pass with the new delta creation approach
This is part of the ongoing effort to standardize on the DeltaBuilder
API across the codebase for better consistency and maintainability.
- Update ResolverPlugin interface to allow resolve() to return undefined
- Modify CustomResolver to skip properties with undefined values
- Add test case for resolvers that return undefined
- Update existing tests to handle cases where no properties are resolved
This change makes the behavior more explicit when resolvers don't return a value,
which is particularly important for numeric aggregations where 0 might be a valid result.
