class_docstr: Map between a `list` of stats to `dict` of stats.
class_docstr_tok: ["Map","between","a","`","list","`","of","stats","to","`","dict","`","of","stats","."]
code: def n_samplers(self) -> int:
      return len(self._stat_groups)
  
imports: import warnings
  from abc import ABC, abstractmethod
  from enum import IntEnum, unique
  from typing import Any, Dict, Iterable, List, Mapping, Sequence, Tuple, Union
  import numpy
  from pytensor.graph.basic import Variable
  from pymc.blocking import PointType, StatDtype, StatsDict, StatShape, StatsType
  from pymc.model import modelcontext
label_desc: Use image node_id 2 for calling the StatsBijection obj's underlying member method code with example usage: obj.n_samplers() and returns: len