Worked on the microsoft/kiota-dart repository to enhance the serialization library’s reliability by addressing null-safety concerns in Dart. Focused on improving error handling within the getBoolValue method, a targeted bug fix introduced a null check to ensure the method returns null when the input node is null, preventing potential runtime exceptions. Complemented this change with new unit tests for both JSON and text parsers, verifying correct behavior and guarding against regressions. Emphasized disciplined use of Dart’s null-safety features and a test-driven approach, resulting in improved runtime stability and maintainability for API client generation workflows involving serialization and deserialization.