Which bootstrap method?

Hi everyone, 

I am trying to understand how this library works. 

Does it use a percentile-based (PB), bias-corrected percentile-based (BC-PB) or accelerated bias-corrected percentile-based (BCa-PB) bootstrap method?

What about the pivotal method? Is it the "non-studentized pivotal (basic)” or the "basic percentile" bootstrap method?

Please, let me know. 

Thanks,

Federico 