Help with RSL in my php app

Hello,

I'm using https://microsoft.github.io/PowerBI-JavaScript/ in my php aplication and I can see reports and dashboards in my app, but I'm confuse if i can or not use RSL on my aplication. I have read documentation for this:

https://docs.microsoft.com/en-us/power-bi/developer/embedded-row-level-security

And I had found that with:  https://docs.microsoft.com/es-es/rest/api/power-bi/embedtoken i can do it.

But I can't found inside the PowerBI-JavaScript code nothing about embedtoken or identities to use it or call it.

Can Anyone help me?

Best regards