code: def split(self):
      self.my_node_index = None
  
file_path: metaflow/test/core/tests/basic_parallel.py
imports: from metaflow_test import MetaflowTest, ExpectationFailed, steps, tag
label_desc: Use image node_id 1 for calling the BasicParallelTest obj's underlying member method code with example usage: obj.split() without return types