code: def step_all(self):
      from metaflow import current
  
      assert_equals(current.foobar_value, "this_is_foobar")
  
imports: from metaflow_test import MetaflowTest, ExpectationFailed, steps
label_desc: Use image node_id 1 for calling the FlowOptionsTest obj's underlying member method code with example usage: obj.step_all() without return types