You do not need 'run' for this. In order a method is executed initiate it in your method. Since we are speaking about ir.actions.server, you may return it in your methods. Important:

* the decorator should be api@multi. api@one would be executed, but the window would not be shown up

* you can return a window action only from another action (e.g. button click). It is impossible to return a window from 'create', 'write', 'inverse', 'compute', etc using standard Odoo tools. Again the method would be executed, but no window would appear.

E.g.:

@api.multi
def your_method(self):
   self.ensure_one()
   return self.indicator.calculation_function()

when I try to return the calculation function it shows me this error :

TypeError: 'ir.actions.server' object is not callable

I use Odoo 10