code: def __init__(self):
      self.store = dict()
  
file_path: ray/python/ray/serve/tests/unit/test_endpoint_state.py
imports: import sys
  from typing import Any, Tuple
  from unittest.mock import Mock, patch
  import pytest
  from ray.serve._private.endpoint_state import EndpointState
label_desc: Use image node_id 1 to create a new MockKVStore object  with example: obj = MockKVStore()