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Update changelogs from fern repo #6945

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Merged
thesandlord merged 1 commit into from
Sep 14, 2026
Merged

Update changelogs from fern repo #6945

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9 changes: 9 additions & 0 deletions fern/products/sdks/generators/go/changelog/2026-09-14.mdx
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## 1.58.1
**`(fix):`** Preserve required-nullable fields that arrive as `null` when a decoded model is
marshaled again. Generated `UnmarshalJSON` now records which required-nullable
keys were present in the incoming JSON (via a per-type wire-name-to-field-bit
table) so that `MarshalJSON` re-emits them as `null` instead of dropping them.
Fields absent from the input stay absent, and freshly constructed values
(e.g. request bodies) serialize exactly as before.


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