code: def get_filenames(
      incipit: str, base_folder=TEST_DATA_PATH, extension=".json"
  ) -> List[str]:
      # Lists all the files in `base_folder` starting with `incipit`
      all_files = os.listdir(base_folder)
      good_files = [
          base_folder + f
          for f in all_files
          if f.startswith(incipit) and f.endswith(extension)
      ]
      return good_files
  
file_path: jaxdf/tests/test_laplacian_accuracy.py
imports: import json
  import os
  from typing import List
  import numpy
  import pytest
  from jax import numpy
  from jaxdf import FourierSeries
  from jaxdf.geometry import Domain
  from jaxdf.operators import laplacian
label_desc: Use image node_id 1 for calling a global function with example usage: get_filenames(incipit, base_folder, extension) and returns: good_files