public async bool call_pm_get_state (Variant arg_options, Cancellable? cancellable, out uint8 out_state) throws Error
Asynchronously invokes the PmGetState D-Bus method on this.
When the operation is finished,
callback will be invoked in the thread-default main loop of the thread you are calling
this method from. You can then call call_pm_get_state.end to get the result of the operation.
See call_pm_get_state_sync for the synchronous, blocking version of this method.
Argument to pass with the method invocation.
A Cancellable or
A TaskReadyCallback to call when the request is satisfied or
User data to pass to