ibm-cloud-sdk-core/build/docs/ibm-cloud-sdk-core.authenticator.authenticate.md

Core functionality to support SDKs generated with IBM's OpenAPI SDK Generator.

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[Home](./index.md) &gt; [ibm-cloud-sdk-core](./ibm-cloud-sdk-core.md) &gt; [Authenticator](./ibm-cloud-sdk-core.authenticator.md) &gt; [authenticate](./ibm-cloud-sdk-core.authenticator.authenticate.md)

## Authenticator.authenticate() method

Augment the request with authentication information.

**Signature:**

```typescript
authenticate(requestOptions: AuthenticateOptions): Promise<void>;
```

## Parameters

<table><thead><tr><th>

Parameter


</th><th>

Type


</th><th>

Description


</th></tr></thead>
<tbody><tr><td>

requestOptions


</td><td>

AuthenticateOptions


</td><td>

The request to augment with authentication information.


</td></tr>
</tbody></table>
**Returns:**

Promise&lt;void&gt;

## Exceptions

Error: The authenticate method was not implemented by a subclass.