code: def make_scheduler(self, **kwargs):
          
          from .launcher import PyFlowScheduler
          if not kwargs:
              # User config if kwargs is empty
              sched = PyFlowScheduler.from_user_config()
          else:
              # Use from_file if filepath if present, else call __init__
              filepath = kwargs.pop("filepath", None)
              if filepath is not None:
                  assert not kwargs
                  sched = PyFlowScheduler.from_file(filepath)
              else:
                  sched = PyFlowScheduler(**kwargs)
  
          sched.add_flow(self)
          return sched
docs: Build a return a :class:`PyFlowScheduler` to run the flow.
  
          Args:
              kwargs: if empty we use the user configuration file.
                      if `filepath` in kwargs we init the scheduler from filepath.
                      else pass **kwargs to :class:`PyFlowScheduler` __init__ method.