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# CMMetadataDataTypeRegistryGetBaseDataTypes()

Returns an array of base data type identifiers.

```
func CMMetadataDataTypeRegistryGetBaseDataTypes() -> CFArray?
```

## Return Value

An array of the base data types to which all others must conform.

## Discussion

There are a set of base data types that seed the data type registry. All valid data types will have their conformance search end with a base data type.

---

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