# File lib/fog/aws/requests/cloud_watch/get_metric_statistics.rb, line 27
        def get_metric_statistics(options={})
          %w{Statistics StartTime EndTime Period MetricName Namespace}.each do |required_parameter|
            raise ArgumentError, "Must provide #{required_parameter}" unless options.has_key?(required_parameter)
          end
          statistics = options.delete 'Statistics'
          options.merge!(AWS.indexed_param('Statistics.member.%d', [*statistics]))

          if dimensions = options.delete('Dimensions')
            options.merge!(AWS.indexed_param('Dimensions.member.%d.Name', dimensions.collect {|dimension| dimension['Name']}))
            options.merge!(AWS.indexed_param('Dimensions.member.%d.Value', dimensions.collect {|dimension| dimension['Value']}))
          end

          request({
              'Action'    => 'GetMetricStatistics',
              :parser     => Fog::Parsers::AWS::CloudWatch::GetMetricStatistics.new
            }.merge(options))
        end