---
lang: en
title: 'API docs: metadata.designtimemethodmetadata.parametertypes'
keywords: LoopBack 4.0, LoopBack 4
sidebar: lb4_sidebar
permalink: /doc/en/lb4/apidocs.metadata.designtimemethodmetadata.parametertypes.html
---

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[Home](./index.md) &gt; [@loopback/metadata](./metadata.md) &gt; [DesignTimeMethodMetadata](./metadata.designtimemethodmetadata.md) &gt; [parameterTypes](./metadata.designtimemethodmetadata.parametertypes.md)

## DesignTimeMethodMetadata.parameterTypes property

An array of parameter types

<b>Signature:</b>

```typescript
parameterTypes: Function[];
```

