code: def list_cache_subnet_groups(name=None, region=None, key=None,
                               keyid=None, profile=None):
      '''
      Return a list of all cache subnet group names
  
      CLI example::
  
          salt myminion boto_elasticache.list_subnet_groups region=us-east-1
      '''
      return [g['CacheSubnetGroupName'] for g in
              get_all_cache_subnet_groups(name, region, key, keyid, profile)f list_cache_subnet_groups(name=None, region=None, key=None,
                               keyid=None, profile=None):
      '''
      Return a list of all cache subnet group names
  
      CLI example::
  
          salt myminion boto_elasticache.list_subnet_groups region=us-east-1
      '''
      return [g['CacheSubnetGroupName'] for g in
              get_all_cache_subnet_groups(name, region, key, keyid, profile)]
docs: Return a list of all cache subnet group names
  
      CLI example::
  
          salt myminion boto_elasticache.list_subnet_groups region=us-east-1