---
title: "null"
framework: foundationmodels
role: symbol
role_heading: Type Property
path: foundationmodels/dynamicgenerationschema/null
---

# null

Creates a null schema.

## Declaration

```swift
static var null: DynamicGenerationSchema { get }
```

## Discussion

Discussion You can use null schemas as a way to express types that cannot be absent, but may have an empty value. let person = DynamicGenerationSchema(     name: "Person",     properties: []         DynamicGenerationSchema.Property(           name: "fullName",           schema: DynamicGenerationSchema(type: String.self)         )     ] )

let nullablePerson = DynamicGenerationSchema(   name: "NullablePerson",   anyOf: [person, .null] )

let schema = try GenerationSchema(root: nullablePerson, dependencies: [])