Use Classic Console Integration Toolkit Methods in Lightning Experience

Starting with API version 42.0 of the Salesforce Console Integration Toolkit, many Salesforce Classic methods used in existing Visualforce pages and third-party web tabs work in Lightning Experience. Just point to the latest version of the toolkit script in your Visualforce pages or third-party web tabs. Third-party content must be whitelisted in the CSP Trusted Sites. This change applies to Lightning Experience only.