    # File lib/fog/aws/requests/auto_scaling/describe_auto_scaling_instances.rb, line 59
            def describe_auto_scaling_instances(options = {})
              if instance_ids = options.delete('InstanceIds')
                options.merge!(AWS.indexed_param('InstanceIds.member.%d', [*instance_ids]))
              end
              request({
                'Action' => 'DescribeAutoScalingInstances',
                :parser  => Fog::Parsers::AWS::AutoScaling::DescribeAutoScalingInstances.new
              }.merge!(options))
            end