async def METHOD_NAME(self):
    """
    Determine target number of workers that should exist.
    Notes
    -----
    ``Adaptive.target`` dispatches to Scheduler.adaptive_target(),
    but may be overridden in subclasses.
    Returns
    -------
    Target number of workers
    See Also
    --------
    Scheduler.adaptive_target
    """
    return await self.scheduler.adaptive_target(
        target_duration=self.target_duration
    )