langchain/experimental/autonomous_agents/autogpt/memory.py/AutoGPTMemory/load_memory_variables
class AutoGPTMemory:    def load_memory_variables(self, inputs: Dict[str, Any]) -> Dict[str, Any]:
        input_key = self._get_prompt_input_key(inputs)
        query = inputs[input_key]
        docs = self.retriever.get_relevant_documents(query)
        return {
            "chat_history": self.chat_memory.messages[-10:],
            "relevant_context": docs,
        }