code: def split(self):
      self.my_index = None
      from metaflow.plugins import InternalTestUnboundedForeachInput
  
      self.arr = InternalTestUnboundedForeachInput(range(2))
  
file_path: metaflow/test/core/tests/basic_unbounded_foreach.py
imports: from metaflow_test import MetaflowTest, ExpectationFailed, steps, tag
label_desc: Use image node_id 1 for calling the BasicUnboundedForeachTest obj's underlying member method code with example usage: obj.split() without return types