# Create a mock agent for testing
    class MockAgent:
        @property
        def name(self) -> str:
            return "TestAgent"
        
        def chat(self, prompt: str, **kwargs) -> str:
            return "Mock response"
        
        async def achat(self, prompt: str, **kwargs) -> str:
            return "Async mock response"
    
    # Use in tests
    agent: AgentProtocol = MockAgent()
    result = agent.chat("Hello")