code: def fibre_channel_wwns():
      '''
      Return list of fiber channel HBA WWNs
      '''
      grains = {'fc_wwn': False}
      if salt.utils.platform.is_linux():
          grains['fc_wwn'] = _linux_wwns()
      elif salt.utils.platform.is_windows():
          grains['fc_wwn'] = _windows_wwns()
      return grainf fibre_channel_wwns():
      '''
      Return list of fiber channel HBA WWNs
      '''
      grains = {'fc_wwn': False}
      if salt.utils.platform.is_linux():
          grains['fc_wwn'] = _linux_wwns()
      elif salt.utils.platform.is_windows():
          grains['fc_wwn'] = _windows_wwns()
      return grains
docs: Return list of fiber channel HBA WWNs