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lang: en
title: 'API docs: context-explorer.contextgraph._constructor_'
keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI
sidebar: lb4_sidebar
editurl: https://github.com/loopbackio/loopback-next/tree/master/extensions/context-explorer
permalink: /doc/en/lb4/apidocs.context-explorer.contextgraph._constructor_.html
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[Home](./index.md) > [@loopback/context-explorer](./context-explorer.md) > [ContextGraph](./context-explorer.contextgraph.md) > [(constructor)](./context-explorer.contextgraph._constructor_.md)
## ContextGraph.(constructor)
Constructs a new instance of the `ContextGraph` class
<b>Signature:</b>
```typescript
constructor(ctx: JSONObject, options?: ContextGraphOptions);
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| ctx | [JSONObject](./context.jsonobject.md) | |
| options | [ContextGraphOptions](./context-explorer.contextgraphoptions.md) | |