# File lib/aws/emr/job_flow_collection.rb, line 167
      def _each_item options = {}, &block

        resp = client.describe_job_flows(@filters.merge(options))
        resp.data[:job_flows].each do |details|

          job_flow = JobFlow.new_from(
            :describe_job_flows,
            details,
            details[:job_flow_id],
            :config => config)

          yield(job_flow)

        end
      end