code: def __str__(self):
      return f"StepMetrics(name={self.name}, type={self.type}, groups={self.groups}, step_axis={self.step_axis}, data={self.data})"
  
imports: import time
  import typing
  from typing import Dict, List, Optional, Tuple, Union
  import pydantic
  from ._namespace import NS, IndexedNS
label_desc: Use image node_id 5 for calling the StepMetrics obj's underlying member method code with example usage: obj.__str__() and returns: str, self, str, self, str, self, str, self, str, self, str