---------------------- I'm sorry, but based on the information provided in the extracts, there's no mention of a boilerplate or setup instructions for using Next UI with Next.js in Refine.dev. The extracts mention the use of Ant Design and Material UI with Refine.dev, but not Next UI.
For more information or assistance, you might want to check the official Refine.dev documentation(https://refine.dev/docs) or their blog(https://refine.dev/blog). ---------------------- Note: you can ask me a follow up question by @ mentioning me again ----------------------