# File lib/ec2/right_ec2.rb, line 276
    def describe_availability_zones(*availability_zones)
      availability_zones = availability_zones.flatten
      link = generate_request("DescribeAvailabilityZones", amazonize_list('ZoneName', availability_zones))
      request_cache_or_info :describe_availability_zones, link,  QEc2DescribeAvailabilityZonesParser, @@bench, availability_zones.blank?
    rescue Exception
      on_exception
    end