code: def __init__(
      self, format: str, label_fields: Optional[Sequence[str]] = None
  ):
      self.format = format
      self.label_fields = label_fields
  
imports: from __future__ import absolute_import
  from abc import ABC, abstractmethod
  from typing import Any, Dict, Optional, Sequence, Tuple
  import numpy
  from .serialization import Serializable
label_desc: Use image node_id 1 to create a new Params object from inherited base classes: Serializable, ABC with example: obj = Params(format, label_fields)