Also, if you have created the 20th asynchronous task managing class, please put it in context with all the others - which are deprecated, which are good for what use case, etc.

Alsoalso why do we need "factories" for abstract objects that relate to other abstract objects that are some sort of "thing"?

I have to wonder if some of this has to do with really smart people coming to work at Google, adding something without ever really grokking the whole mess, and then leaving after a couple of years because they got their tour of duty for their resume.