Datasource with backend | How to call RessourceHandler from frondend

I want to implement a autocompletion in my QueryEditor.
The backend plugin is implementing: https://pkg.go.dev/github.com/grafana/grafana-plugin-sdk-go@v0.79.0/backend#CallResourceHandler

I tryed calling it using: https://grafana.com/docs/grafana/latest/packages_api/runtime/getbackendsrv/
But it seams the path is not correct.
Has someone a plugin that uses the Resource handler for autocompletion

ok got it…

the passed props object on the frondend has access to the getRessource method of the Datasource.