# OAuth2 configuration
You can configure OAuth2 authorization by calling `initOAuth` method with passed configs under the instance of `SwaggerUIBundle`
default `client_id` and `client_secret`, `realm`, an application name `appName`, `scopeSeparator`, `additionalQueryStringParams`,
`useBasicAuthenticationWithAccessCodeGrant`.

Config Name | Description
--- | ---
client_id | Default clientId. MUST be a string
client_secret | Default clientSecret. MUST be a string
realm | realm query parameter (for oauth1) added to `authorizationUrl` and `tokenUrl` . MUST be a string
appName | application name, displayed in authorization popup. MUST be a string
scopeSeparator | scope separator for passing scopes, encoded before calling, default value is a space (encoded value `%20`). MUST be a string
additionalQueryStringParams | Additional query parameters added to `authorizationUrl` and `tokenUrl`. MUST be an object
useBasicAuthenticationWithAccessCodeGrant | Only activated for the `accessCode` flow.  During the `authorization_code` request to the `tokenUrl`, pass the [Client Password](https://tools.ietf.org/html/rfc6749#section-2.3.1) using the HTTP Basic Authentication scheme (`Authorization` header with `Basic base64encoded[client_id:client_secret]`).  The default is `false`

```javascript
const ui = SwaggerUI({...})

// Method can be called in any place after calling constructor SwaggerUIBundle
ui.initOAuth({
    clientId: "your-client-id",
    clientSecret: "your-client-secret-if-required",
    realm: "your-realms",
    appName: "your-app-name",
    scopeSeparator: " ",
    additionalQueryStringParams: {test: "hello"}
  })
```