# kind Schema

```txt
https://amazonalexa.com/ask/2020/12/TypeReference#/properties/kind
```

The expression's identifier.

| Abstract            | Extensible | Status         | Identifiable            | Custom Properties | Additional Properties | Access Restrictions | Defined In                                                                      |
| :------------------ | :--------- | :------------- | :---------------------- | :---------------- | :-------------------- | :------------------ | :------------------------------------------------------------------------------ |
| Can be instantiated | No         | Unknown status | Unknown identifiability | Forbidden         | Allowed               | none                | [TypeReference.json\*](../../schemas/TypeReference.json "open original schema") |

## kind Type

unknown ([kind](typereference-properties-kind.md))

## kind Constraints

**constant**: the value of this property must be equal to:

```json
"TypeReference"
```