Hi Martin,
Thank you for your patience.
We have implemented and included the feature of “Refresh command and command parameter support for PullToRefresh” in our Weekly NuGet package update version 17.4.0.40 which is available for download (nuget.org) and its available from 17.4.0.40 Syncfusion version.
Please refer the below UG for more information
We thank you for your support and appreciate your patience in waiting for this update. Please get in touch with us if you would require any further assistance.
Regards,
Farjana Parveen A