Button to Reload Report Layer in Power BI Desktop

With PBIR is now possible to programatically modify the visual.json files to speed up the report design process. However, having to close and open the file to see the changes is time consuming and may even defeat the purpose of programatically modfying the visual.json files.

Automatic update like when a measure is created by an external tool would we awesome, but at the very least there should be some way of reloading the report layer without closing everything and reopening the file.

thank you!!