    # File lib/fog/aws/requests/compute/modify_instance_attribute.rb, line 24
            def modify_instance_attribute(instance_id, attributes)
              params = {}
              params.merge!(Fog::AWS.indexed_param('GroupId', attributes.delete('GroupId') || []))
              params.merge!(attributes)
              request({
                'Action'        => 'ModifyInstanceAttribute',
                'InstanceId'    => instance_id,
                :idempotent     => true,
                :parser         => Fog::Parsers::Compute::AWS::Basic.new
              }.merge!(params))
            end