Function rest_availability_service_get_leaf_ranges 

async fn rest_availability_service_get_leaf_ranges<S>(
    __arg0: State<Arc<S>>,
    headers: HeaderMap,
    __arg2: Json<GetLeafRangesRequest>,
) -> Result<Json<LeafRangeResponse>, RestError>
where
    S: AvailabilityService + Send + Sync + 'static,

GetLeafRanges - JSON endpoint.

POST /v2/availability/leaf-ranges