code: def maybe_use_numba(engine: str | None) -> bool:
      """Signal whether to use numba routines."""
      return engine == "numba" or (engine is None and GLOBAL_USE_NUMBA)
  
file_path: catboost/contrib/python/pandas/py3/pandas/core/util/numba_.py
imports: from __future__ import annotations
  import types
  from typing import TYPE_CHECKING, Callable
  import numpy
  from pandas.compat._optional import import_optional_dependency
  from pandas.errors import NumbaUtilError
label_desc: Use image node_id 1 for calling a global function with example usage: maybe_use_numba(engine) and returns: unknown