class_docstr: Macronize Latin words.
  
  Macronize text by using the POS tag to find the macronized form within the
  Morpheus database.
code: def _setup_macrons_data(self):
      rel_path = os.path.join(
          CLTK_DATA_DIR,
          "lat",
          "model",
          "lat_models_cltk",
          "taggers",
          "macrons",
          "macrons.py",
      )
      path = os.path.expanduser(rel_path)
      loader = importlib.machinery.SourceFileLoader("macrons", path)
      module = loader.load_module()
      macrons = module.vowel_len_map
      return macrons
  
file_path: cltk/src/cltk/prosody/lat/macronizer.py
imports: import importlib.machinery
  import os
  from typing import List, Tuple
  from cltk.core.cltk_logger import logger
  from cltk.tag.pos import POSTag
  from cltk.utils import CLTK_DATA_DIR
label_desc: Use image node_id 2 for calling the Macronizer obj's underlying member method code with example usage: obj._setup_macrons_data() and returns: macrons