Reboot node or nodes of a Grid using WAPI

[#1]

I am looking for an API to reboot a grid member nodes(s) using Rest API (/WAPI)? 

This is possible from the user interface from Control options of Grid member but I couldnt find any documentation in API. 

Appreciate the quick help.

Thank you.

[#2]

Were you able to figure this out?

I realize this was asked 2+ years ago.  Hoping you were able to or bumping so maybe someone else has an answer.

Either way, thank you!

[#3]

I just looked at the WAPI 2.12 guide, In the admingroup:machinecontroltoplevelcommands :
Toplevel commands, you can set boolean values for reboot, reset, restart, and shutdown. This allows the cli user to run the commands.  No command from API to run a reboot command.