code: def to_list(cls, v):
      return v if isinstance(v, list) else [v]
  
imports: from typing import Union, List
  import pydantic
  from ._fields import string_choice, Parameter, conint, confloat
  from ._metrics import statistic_metrics_param, legal_percentile
label_desc: Use image node_id 1 for calling the StandardFilterParam obj's underlying member method code with example usage: obj.to_list(cls, v) and returns: unknown