code: def configuration(parent_package="", top_path=None):
      config = Configuration("tree", parent_package, top_path)
      libraries = []
      if os.name == "posix":
          libraries.append("m")
      config.add_extension(
          "_tree",
          sources=["_tree.pyx"],
          include_dirs=[numpy.get_include()],
          libraries=libraries,
          extra_compile_args=["-O3"],
      )
      config.add_extension(
          "_splitter",
          sources=["_splitter.pyx"],
          include_dirs=[numpy.get_include()],
          libraries=libraries,
          extra_compile_args=["-O3"],
      )
      config.add_extension(
          "_criterion",
          sources=["_criterion.pyx"],
          include_dirs=[numpy.get_include()],
          libraries=libraries,
          extra_compile_args=["-O3"],
      )
      config.add_extension(
          "_utils",
          sources=["_utils.pyx"],
          include_dirs=[numpy.get_include()],
          libraries=libraries,
          extra_compile_args=["-O3"],
      )
  
      config.add_subpackage("tests")
  
      return config
  
label_desc: Use image node_id 1 for calling a global function with example usage: configuration(parent_package, top_path) and returns: config