code: def invalid_buckets():
      return [
          "hi",
          "goog-24",
          "this-bucket..is-invalid",
          "-this-bucket-is-invalid",
          "this-BUCKET-is-invalid",
          "this-google-is-invalid",
          "this-g00gle-is-invalid",
          "192.168.5.4",
      ]
  
imports: import pytest
  import datetime
  import os
  import json
  from sacred.observers import GoogleCloudStorageObserver
label_desc: Use image node_id 19 for calling a global function with example usage: invalid_buckets() and returns: list