# File lib/ec2/right_ec2.rb, line 393
   def describe_availability_zones(options={})
      link = generate_request("DescribeAvailabilityZones", options={})
      request_info_xml_simple(:rds_connection, @params, link, @logger,
                                           :group_tags=>{"DBInstances"=>"DBInstance",
                                                            "DBParameterGroups"=>"DBParameterGroup",
                                                            "DBSecurityGroups"=>"DBSecurityGroup",
                                                            "EC2SecurityGroups"=>"EC2SecurityGroup",
                                                            "IPRanges"=>"IPRange"},
                                           :force_array=>["DBInstances",
                                                          "DBParameterGroups",
                                                          "DBSecurityGroups",
                                                          "EC2SecurityGroups",
                                                          "IPRanges"],
                                           :pull_out_array=>options[:pull_out_array],
                                           :pull_out_single=>options[:pull_out_single],
                                           :wrapper=>options[:wrapper])
    rescue Exception
      on_exception
    end