code: def test_project_exists(self):
      dataset = (
          foz.load_zoo_dataset("quickstart", max_samples=1)
          .select_fields("ground_truth")
          .clone()
      )
  
      all_results = []
      for i in range(20):
          anno_key = "project_exists"
          results = dataset.annotate(
              anno_key + str(i),
              label_field="ground_truth",
              backend="cvat",
              project_name="fo_cvat_test_" + str(i),
          )
          all_results.append(results)
  
      projects_exist = []
      for i, results in enumerate(all_results):
          with results:
              api = results.connect_to_api()
              for project_id in results.project_ids:
                  projects_exist.append(api.project_exists(project_id))
  
          dataset.load_annotations(anno_key + str(i), cleanup=True)
  
      self.assertNotIn(False, projects_exist)
  
      view = dataset.take(1)
  
      anno_key = "project_not_exists"
      results = view.annotate(
          anno_key,
          label_field="ground_truth",
          backend="cvat",
          project_name="fo_cvat_project_test",
      )
  
      project_id = results.project_ids[0]
      with results:
          api = results.connect_to_api()
          api.delete_project(project_id)
          self.assertFalse(api.project_exists(project_id))
  
      dataset.load_annotations(anno_key, cleanup=True)
  
imports: from bson import ObjectId
  from collections import defaultdict
  import numpy
  import os
  import unittest
  import eta.core.utils
  import fiftyone
  import fiftyone.utils.cvat
  import fiftyone.zoo
  from fiftyone.core.expressions import ViewField
label_desc: Use image node_id 16 for calling the CVATTests obj's underlying member method code with example usage: obj.test_project_exists() without return types