How to get latest Documents from vector store?

[siisee11]

I'm currently working on a Chatbot using VectorStoreRetrieverMemory. At the moment, I'm able to retrieve only relevant messages from the vector store. However, I also want to include the most recent messages as part of the context. Here's an example of how I would like to structure prompt:

const chatPrompt = ChatPromptTemplate.fromPromptMessages([
  SystemMessagePromptTemplate.fromTemplate(systemPromptTemplate),
  new MessagesPlaceholder("history"),
  new MessagesPlaceholder("recent"),
  HumanMessagePromptTemplate.fromTemplate("{input}"),
]);

The challenge I'm facing is that the VectorStoreRetriever class only provides the getRelevantDocuments function. I'm wondering if you have any suggestions on how I can incorporate the recent messages into the context given this limitation.