def METHOD_NAME(self):
    token = self.token
    endpoint = self.endpoint
    thread_id = self._thread_id
    # [START get_chat_thread_client]
    from azure.communication.chat.aio import ChatClient, CommunicationTokenCredential
    # set `endpoint` to an existing ACS endpoint
    chat_client = ChatClient(endpoint, CommunicationTokenCredential(token))
    # set `thread_id` to an existing chat thread id
    chat_thread_client = chat_client.METHOD_NAME(thread_id)
    # [END get_chat_thread_client]
    print("chat_thread_client created with thread id: ", chat_thread_client.thread_id)