anchor.diff:      argument_specs = [#atm_lambda_argument_spec{
           name = <<"arg">>,
           data_spec = ?ATM_LAMBDA_DATA_SPEC,
  -        is_batch = false,
           is_optional = true,
           default_value = 8
       }],
       result_specs = [#atm_lambda_result_spec{
           name = <<"res">>,
  -        data_spec = ?ATM_LAMBDA_DATA_SPEC,
  -        is_batch = true
  +        data_spec = ?ATM_LAMBDA_DATA_SPEC
       }],
       resource_spec = #atm_resource_spec{
           cpu_requested = 2.0, cpu_limit = 4.0,
  
positive.code:             name = <<"lane1Name">>,
              store_iterator_spec = #atm_store_iterator_spec{
                  store_schema_id = <<"store1Id">>,
                  strategy = #atm_store_iterator_serial_strategy{}
              },
              parallel_boxes = [
                  #atm_parallel_box_schema{
  
negative.code:             name = <<"lane2Name">>,
              store_iterator_spec = #atm_store_iterator_spec{
                  store_schema_id = <<"store2Id">>,
                  max_batch_size = 1000
              },
              parallel_boxes = [
                  #atm_parallel_box_schema{
  