1. Add the reusable authentication method:
    1. Click the Libraries drop-down menu and select Authentication Methods.
    2. Click the Add Authentication Method drop-down menu and select Google Cloud.
  2. Provide a unique name for the authentication method.
  3. Optionally, enter a description to help identify the purpose or scope of this method.
  4. Select the Authentication Type:
    • HMAC: Enter the following information:
      • Access ID: Enter the access ID.
      • Secret: Enter the secret.
    • OAuth 2.0: Select one of the following:
      • Upload JSON File: Upload a JSON configuration file.
      • Enter Manually: Enter the following information:
        • Client ID: Enter the client ID issued by the OAuth provider.
        • Private Key: Enter the private key.
  5. Save the new authentication method.