code: def setUpClass(cls) -> None:
      super().setUpClass()
      app_data = {"type": "metric_explorer", "state": {}}
      response = cls.client.post("/api/apps/", json=app_data)
      cls.app_id = response.json()["id"]
      for i in range(5):
          cls.client.post(
              "/api/dashboards/", json={"name": f"dashboard_{i}"}
          )
  
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 TestDashboardsApi obj's underlying member method code with example usage: obj.setUpClass(cls) without return types