code: def from_limits(cls, read_speed_limit=None, write_speed_limit=None):
          
          return cls(read=Throttle(limit=read_speed_limit),
                     write=Throttle(limit=write_speed_limit))
docs: Simple wrapper for creation :py:class:`aioftp.StreamThrottle`
  
          :param read_speed_limit: stream read speed limit in bytes or
              :py:class:`None` for unlimited
          :type read_speed_limit: :py:class:`int` or :py:class:`None`
  
          :param write_speed_limit: stream write speed limit in bytes or
              :py:class:`None` for unlimited
          :type write_speed_limit: :py:class:`int` or :py:class:`None`