code: def library_dir_option(self, dir):
      return "-L" + dir
  
file_path: catboost/contrib/tools/python3/src/Lib/distutils/unixccompiler.py
imports: import os, sys, re
  from distutils import sysconfig
  from distutils.dep_util import newer
  from distutils.ccompiler import CCompiler, gen_preprocess_options, gen_lib_options
  from distutils.errors import DistutilsExecError, CompileError, LibError, LinkError
  from distutils import log
label_desc: Use image node_id 5 for calling the UnixCCompiler obj's underlying member method code with example usage: obj.library_dir_option(dir) and returns: unknown