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'@backstage/plugin-techdocs-react': patch
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TechDocs addons in the new frontend system now use a Utility API pattern instead of multiple attachment points. The `AddonBlueprint` now uses this new approach, and while addons created with older versions still work, they will produce a deprecation warning and will stop working in a future release.

As part of this change, the `techDocsAddonDataRef` alpha export was removed.