@alexa/ask-expressions-spec
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The JSON Schema specification for the Alexa Skills Kit Intermediate Representation (ASKIR).
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# Untitled boolean in TypeDeclaration Schema
```txt
https://amazonalexa.com/ask/2020/12/TypeDeclaration#/properties/properties/items/properties/optional
```
Indicates whether the property is required in expressions of this type.
| Abstract | Extensible | Status | Identifiable | Custom Properties | Additional Properties | Access Restrictions | Defined In |
| :------------------ | :--------- | :------------- | :---------------------- | :---------------- | :-------------------- | :------------------ | :---------------------------------------------------------------------------------- |
| Can be instantiated | No | Unknown status | Unknown identifiability | Forbidden | Allowed | none | [TypeDeclaration.json\*](../../schemas/TypeDeclaration.json "open original schema") |
## optional Type
`boolean`