code: def list_attributes(arena):
      return ["type", "min", "max", "levels"]
  
imports: from abc import ABC, abstractmethod
  import numpy
  import math
  from pandas.api.types import is_numeric_dtype, is_bool_dtype, is_object_dtype
label_desc: Use image node_id 7 for calling the VariableParam obj's underlying member method code with example usage: obj.list_attributes(arena) and returns: list