Add comprehensive unit tests for DocumentBuilder and ProjectModifierHelper methods#3451

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copilot/add-unit-testing-methods

Commits on Dec 18, 2025

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Add comprehensive unit tests for DocumentBuilder and ProjectModifierHelper methods

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haileymck
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Add additional comprehensive unit tests for DocumentBuilder and ProjectModifierHelper

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Commits on Feb 3, 2026

Fix missing using statements in test files

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Commits on Feb 4, 2026

Fix async/await inconsistencies in test methods

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