docs: def iostat(interval=1, count=5, disks=None):
      '''
      Gather and return (averaged) IO stats.
  
      .. versionadded:: 2016.3.0
  
      .. versionchanged:: 2016.11.4
          Added support for AIX
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' disk.iostat 1 5 disks=sda
      '''
      if salt.utils.platform.is_linux():
          return _iostat_linux(interval, count, disks)
      elif salt.utils.platform.is_freebsd():
          return _iostat_fbsd(interval, count, disks)
      elif salt.utils.platform.is_aix():
          return _iostat_aix(interval, count, disks)