code: def fastpitch_model():
      model = FastPitchModel.from_pretrained(
          model_name="tts_en_fastpitch"
      )
      model.export_config["enable_volume"] = True
      model.export_config["enable_ragged_batches"] = True
      return model
  
file_path: NeMo/tests/collections/tts/test_tts_exportables.py
imports: import os
  import tempfile
  import pytest
  import torch
  from omegaconf import OmegaConf
  from nemo.collections.tts.models import FastPitchModel, HifiGanModel, RadTTSModel
  from nemo.utils.app_state import AppState
label_desc: Use image node_id 1 for calling a global function with example usage: fastpitch_model() and returns: model