Function generateMfaQrCodeUrl

generateMfaQrCodeUrl(
    mfaSetupConfiguration:
        | {
            mfaCodeCallback: (code: string) => Promise<void>;
            secretCode: string | undefined;
        }
        | undefined,
): string
| undefined
Generate a QR code link to display to a user after they have initiated MFA setup.

Example
```
const mfaSetupQrCodeUrl = authService.generateMfaQrCodeUrl()
if (mfaSetupQrCodeUrl) {
  // use mfaSetupQrCodeUrl to display QR code to user
}
```
Parameters
- mfaSetupConfiguration:
      | {
          mfaCodeCallback: (code: string) => Promise<void>;
          secretCode: string | undefined;
      }
      | undefined
Returns string | undefined
- Defined in src/apps/services/cognito.ts:430