Expose Analysis Services perspective in Power BI REST API

Currently, the Datasets - Update Datasources In Group functionality in the API doesn't give us access to change a perspective in a AS/SSAS connection, so it cannot be updated programatically. Please expose the perspective via the REST API or preferably PowerShell so we can get and set it. Also, it seems as if the perspective might be also embedded in the report. And Analyse In Excel connection information may be stored elsewhere. I am hoping that having access to set the perspective would update the perspective in every location necessary, if this is stored in multiple places.