# File lib/fog/metering/openstack/requests/get_statistics.rb, line 5
        def get_statistics(meter_id, options = {})
          data = {
            'period' => options['period'],
            'q'      => []
          }

          options['q'].each do |opt|
            filter = {}

            ['field', 'op', 'value'].each do |key|
              filter[key] = opt[key] if opt[key]
            end

            data['q'] << filter unless filter.empty?
          end if options['q'].kind_of? Array

          request(
            :body    => Fog::JSON.encode(data),
            :expects => 200,
            :method  => 'GET',
            :path    => "meters/#{meter_id}/statistics"
          )
        end