The SecurityHelper.getServiceAccessToken() method returns the JWT token for a configured service connection that uses a JWT token based authentication method and that doesn’t use the VB Proxy. The method returns an error if the connection type is proxy based (for example, if the connection type is “Always use proxy, irrespective of CORS support" or ”Dynamic, the service does not support CORS”). This method is supported for these authentication types:

• Oracle Cloud Account
• OAuth 2.0 User Assertion
• OAuth 2.0 Client Credentials
• OAuth 2.0 Resource Owner Password Credentials

This table provides further details about this method:

Parameter	servicename: The name of the Service Connection for which the JWT token is to be retrieved.
Constructor	public SecurityHelper()

define(['vb/helpers/securityHelpers'], (helper) => {
…
    async getToken(servicename) {
     let tokenOP = await helper.getServiceAccessToken(servicename);
     return tokenOP;
    }