The resultset needs to support the following methods: GetObject / wasnull / getString

The resultset needs to support the following methods: GetObject / wasnull / getString

The getString method expects that any type can be obtained through this method

Look for the resultset class in the codebase, likely in a directory like src/ or include/. Examine existing methods to understand the interface. The new methods GetObject, wasnull, and getString need to be added, with getString handling type conversion. Check for tests related to resultset to verify the implementation.

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