class_docstr: Compose two functions in a pickleable way
class_docstr_tok: ["Compose","two","functions","in","a","pickleable","way"]
code: def __call__(self, x: RaveledVars) -> T:
      return self.fa(self.fb(x))
  
file_path: pymc/pymc/blocking.py
imports: from __future__ import annotations
  from functools import partial
  from typing import Any, Callable, Dict, Generic, List, NamedTuple, Optional, Sequence, TypeVar, Union
  import numpy
  from typing_extensions import TypeAlias
label_desc: Use image node_id 2 for calling the Compose obj's underlying member method code with example usage: obj.__call__(x) and returns: self