code: def test_db_exec():
      import fiftyone.db
  
      subprocess.check_call(
          [
              os.path.join(fiftyone.db.FIFTYONE_DB_BIN_DIR, "mongod"),
              "--version",
          ]
      )
  
label_desc: Use image node_id 2 for calling a global function with example usage: test_db_exec() without return types