code: def get_r_func(func_name):
      return R_FUNCTIONS[func_name]
  
file_path: metaflow/metaflow/R.py
imports: import os
  import sys
  from importlib import util, machinery
  from tempfile import NamedTemporaryFile
  from .util import to_bytes
label_desc: Use image node_id 2 for calling a global function with example usage: get_r_func(func_name) and returns: R_FUNCTIONS