Documentation for FolderSelector control with methods and ev

Can someone please direct me to the proper location for Sitefinity controls reference documentation? When using a control like a FolderSelector I can see its available properties in intellisense within my designer's code behind C#  file  just fine. However when observed the events they are none apart from those generic eventhandlers for a typical C# control (DataBind, Dispose, Init, Load, PreRender and UnLoad). Now In most examples documented by Sitefinity I see methods called from FolderSelector object in JavaScript file that I have no idea where it comes from. I would be very useful for Sitefinity to list all properties, methods and eventHandlers that these selector control exposes so developers can refer to them since they're not available in intellisense.  Instead of guessing and blindly copying and pasting code they do not understand where they originate. Seriously lazy documentation strategy here.