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# supplementalCompositeType

The supplemental composite type.

```
let supplementalCompositeType: BarcodeObservation.CompositeType?
```

## Discussion

Currently, this can only refer to the composite flag of the 2D symbology as part of a GS1 composite symbology.

This attribute only exists when the primary descriptor is the 1D symbology of a GS1 composite symbology, and of which a valid 2D counterpart has been coalesced into.

---

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