code: def add(self, fn_process: Callable, *args: Any, **kwargs: Any) -> 'Process':
          
          return self.add_in(0.0, fn_process, *args, **kwargs)
docs: Adds a process to the simulation. The process is embodied by a function, which will be called with the given
          positional and keyword parameters when the simulation runs. As a process, this function runs on a special green
          thread, and thus will be able to call functions `now()`, `advance()`, `pause()` and `stop()` to articulate its
          events across the simulated timeline and control the simulation's flow.