def describe_availability_zones(options={})
link = generate_request("DescribeAvailabilityZones", options={})
request_info_xml_simple(self.class.connection_name, @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