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# nestedUnkeyedContainer()

Decodes an unkeyed nested container.

```
mutating func nestedUnkeyedContainer() throws -> any UnkeyedDecodingContainer
```

## Return Value

An unkeyed decoding container view into `self`.

## Discussion> throws: `DecodingError.typeMismatch` if the encountered stored value is
> not an unkeyed container.

---

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