The R session to use
A callback that is called at the beginning of each request, this may be used to debug the requests.
The features to extract (see allFeatureNames).
The requests to extract the features from. May generate them on demand (e.g., by traversing a folder). If your request is statically known, you can use staticRequests to create this generator.
Optional
rootPath: stringThe root path to the project, this is used to relativize the file paths in the statistics.
Extract all wanted statistic information from a set of requests using the presented R session.