docstr: The name of the currently executing step.
  
  Returns
  -------
  str, optional
      Step name.
docstr_tok: ["The","name","of","the","currently","executing","step",".","Returns","--","--","--","-","str",",","optional","Step","name","."]
code: def step_name(self) -> Optional[str]:
      """
      The name of the currently executing step.
  
      Returns
      -------
      str, optional
          Step name.
      """
      return self._step_name
  
imports: from collections import namedtuple
  import os
  from typing import Any, Optional
  from metaflow.metaflow_config import TEMPDIR
label_desc: Use image node_id 9 for calling the Current obj's underlying member method code with example usage: obj.step_name() and returns: self