how to collect datamart refresh schedule from power bi managment api

Hi,

Like with the schedule of the dataset, that can be queried from the API using 
https://learn.microsoft.com/en-us/rest/api/power-bi/datasets/get-refresh-schedule

I hope to find a way to query the same for datamarts since they have a schedule 
In the documentation
I found out that you can actualy get the "batches" of failed and succesful refreshes using this api

'https://api.powerbi.com/v1.0/myorg/datamarts/{datamartid}/batches'
thats undocumented in the learn documentation but it works. 

But since it is only what has happened and not what is planned I like to know:
-if there is a way to list the datamart id of all datamarts in a group / workspace 
-if there is a way to list the refresh schedule for each of the datamarts. 

I know datamarts are still in preview but managing schedules is essential to me. 

Thanks for suggestions on this