Does anyone know what API call they are using to create the auto-sync relationship? From my review of the Dropbox API they seem to support this push in their i

Does anyone know what API call they are using to create the auto-sync relationship? From my review of the Dropbox API they seem to support this push in their iOS and Android SDKs but for web-based SDK it appears you can only poll their API for changes. But clearly there's an event-based push going on here. Any thoughts?