# File lib/fog/aws/requests/ecs/list_container_instances.rb, line 27
        def list_container_instances(params={})
          response = Excon::Response.new
          response.status = 200

          instance_arns = self.data[:container_instances].map { |i| i['containerInstanceArn'] }

          response.body = {
            'ListContainerInstancesResult' => {
              'containerInstanceArns' => instance_arns
            },
            'ResponseMetadata' => {
              'RequestId' => Fog::AWS::Mock.request_id
            }
          }
          response
        end