docs: def list_storage_services(conn=None, call=None):
      '''
      List VMs on this Azure account, with full information
      '''
      if call != 'function':
          raise SaltCloudSystemExit(
              ('The list_storage_services function must be called '
               'with -f or --function.')
          )
  
      if not conn:
          conn = get_conn()
  
      ret = {}
      accounts = conn.list_storage_accounts()
      for service in accounts.storage_services:
          ret[service.service_name] = {
              'capabilities': service.capabilities,
              'service_name': service.service_name,
              'storage_service_properties': service.storage_service_properties,
              'extended_properties': service.extended_properties,
              'storage_service_keys': service.storage_service_keys,
              'url': service.url,
          }
      return ret