code: def _align_dict(self, x: dict) -> list:
      if self._feature_names is None:
          self._feature_names = list(x.keys())
      return [x[k] for k in self._feature_names]
  
imports: from __future__ import annotations
  import copy
  import functools
  import pandas
  from sklearn import base
  from sklearn import exceptions
  from river import base
label_desc: Use image node_id 2 for calling the SKL2RiverBase obj's underlying member method code with example usage: obj._align_dict(x) and returns: unknown