code: def setUpClass(cls) -> None:
      super().setUpClass()
      for _ in range(5):
          cls.client.post(
              "/api/apps/",
              json={"type": "metric_explorer", "state": {}},
          )
  
file_path: aim/tests/api/test_dashboards_api.py
imports: from tests.base import PrefilledDataApiTestBase
label_desc: Use image node_id 1 for calling the TestDashboardAppsApi obj's underlying member method code with example usage: obj.setUpClass(cls) without return types