code: def _neurovault_one_image(img_id):
      """Mocks the Neurovault API behind the `/api/images/<someimageid>` path.
  
      returns a dictionary of API results
  
      See the neurovault API docs for details: https://neurovault.org/api-docs
  
      """
      img_id = int(img_id)
      _, images = _get_neurovault_data()
      if img_id not in images.index:
          return {"detail": "Not found."}
      return images.loc[img_id].to_dict()
  
imports: import hashlib
  import json
  import os
  import re
  import stat
  from urllib import parse
  import numpy
  import pandas
  import pytest
  import requests
  from nilearn._utils.data_gen import generate_fake_fmri
  from nilearn.conftest import _rng
  from nilearn.datasets import neurovault
  from nilearn.image import load_img
label_desc: Use image node_id 6 for calling a global function with example usage: _neurovault_one_image(img_id) and returns: images, dict