code: def check_results(self, flow, checker):
      for step in flow:
          checker.assert_artifact(
              step.name, "no_default_param", "test_str"
          )
          checker.assert_artifact(step.name, "bool_param", False)
          checker.assert_artifact(step.name, "bool_true_param", True)
          checker.assert_artifact(step.name, "int_param", 123)
          checker.assert_artifact(step.name, "str_param", "foobar")
          checker.assert_artifact(
              step.name, "list_param", ["a", "b", "c"]
          )
          checker.assert_artifact(
              step.name, "json_param", {"a": [1, 2, 3]}
          )
  
imports: from metaflow_test import MetaflowTest, ExpectationFailed, steps
label_desc: Use image node_id 2 for calling the BasicParameterTest obj's underlying member method code with example usage: obj.check_results(flow, checker) without return types