Access to Supported JavaScript API Framework Methods Only
You can access published, supported JavaScript API framework methods
only. These methods are published in the reference doc app at https://<myDomain>.lightning.force.com/auradocs/reference.app,
where <myDomain> is the name of your custom Salesforce
domain. Previously, unsupported methods
were accessible, which exposed your code to the risk of breaking when unsupported methods were
changed or removed.