in Sources/_CollectionsTestSupport/MinimalTypes/MinimalDecoder.swift [578:589]
func nestedUnkeyedContainer() throws -> UnkeyedDecodingContainer {
let key = _Key(index)
let value = try _decodeNext([Value].self)
guard case let .array(v) = value else {
throw DecodingError._typeMismatch(at: codingPath + [key],
expectation: [Value].self,
reality: value)
}
let nested = MinimalDecoder.UnkeyedContainer(base: base, parent: parent, input: v, key: key)
pendingContainer = nested
return nested
}