The post mentions that recursive calling is not yet supported, but community member @Emanuel Ferreira has built a tool to help with recursive crawling, with a GitHub repo provided. The comments suggest that there are a few options on llama_hub that could also be useful, and that the community members will need to adapt the tools to their specific use cases. Another community member also found a related project on GitHub that seems suitable for their needs.
They don't support recursive calling yet I think, but @Emanuel Ferreira has built something that can help you with recursive crawling. Here's the GitHub repo: https://github.com/EmanuelCampos/monorepo-llama-index