docs: def submitter(self, f):
          """Decorator to submit a coro-function as NewTask to self.loop with sem control.
          Use default_callback frequency of loop."""
          f = self._wrap_coro_function_with_sem(f)
  
          @wraps(f)
          def wrapped(*args, **kwargs):
              return self.submit(f(*args, **kwargs))
  
          return wrapped