Examples:
require "right_aws_api"
emr = RightScale::CloudApi::AWS::EMR::Manager::new(key, secret, 'https://elasticmapreduce.us-east-1.amazonaws.com')
emr.DescribeJobFlows {"DescribeJobFlowsResponse"=>
{"@xmlns"=>"http://elasticmapreduce.amazonaws.com/doc/2009-03-31",
"DescribeJobFlowsResult"=>{"JobFlows"=>nil},
"ResponseMetadata"=>{"RequestId"=>"962fa6c0-4f71-11e2-9237-6da8e8d0164c"}}}
emr.DescribeJobFlows('JobFlowIds.member' => 'j-3UN6WX5RRO2AG')