Absolutely agree. And when you're really pushing the edges of the documentation (hard to do, but happens on occasion – like reasoning about authentication plugins, or model loading behavior) I've found the source code to be incredibly high quality. By that I mean: well commented, consistently styled, variables have descriptive names, etc. Definitely some of it can look a little crazy but if you clone the git repo and look at the revision history the intent of each commit is well documented and/or linked to a specific bug in their tracker. An absolutely incredible project.