code: def compute_phonemes(item):
      text = item["text"]
      ph = phonemizer.phonemize(text).replace("|", "")
      return set(list(ph))
  
file_path: TTS/TTS/bin/find_unique_phonemes.py
imports: import argparse
  import multiprocessing
  from argparse import RawTextHelpFormatter
  from tqdm.contrib.concurrent import process_map
  from TTS.config import load_config
  from TTS.tts.datasets import load_tts_samples
  from TTS.tts.utils.text.phonemizers import Gruut
label_desc: Use image node_id 1 for calling a global function with example usage: compute_phonemes(item) and returns: set