# File lib/fog/aws/requests/compute/create_route.rb, line 23
        def create_route(route_table_id, destination_cidr_block, internet_gateway_id=nil, instance_id=nil, network_interface_id=nil)
          request_vars = {
            'Action'                => 'CreateRoute',
            'RouteTableId'          => route_table_id,
            'DestinationCidrBlock'  => destination_cidr_block,
            :parser                 => Fog::Parsers::Compute::AWS::Basic.new
          }
          if internet_gateway_id
            request_vars['GatewayId'] = internet_gateway_id
          elsif instance_id
            request_vars['InstanceId'] = instance_id
          elsif network_interface_id
            request_vars['NetworkInterfaceId'] = network_interface_id
          end
          request(request_vars)
        end