code: def numba_supported_reductions(request):
      """reductions supported with engine='numba'"""
      return request.param
  
file_path: pandas/pandas/tests/groupby/conftest.py
imports: import numpy
  import pytest
  from pandas import DataFrame, Index, Series, date_range
  from pandas.core.groupby.base import reduction_kernels, transformation_kernels
label_desc: Use image node_id 10 for calling a global function with example usage: numba_supported_reductions(request) and returns: request