This is a message to anyone in the future who spends hours trying to figure this out. No search for .func_226896_b_() had any mention of this. I wasn't until I started to learn that these methods are named weird because of minecrafts obfuscation and that they eventually do make them human re-able. This is when I started to suspect that this happened with .func_226896_b_() and just started to guess what it might be by typing in the properties area.
So yeah, to any future searchers, .notSolid() replaces .func_226896_b_()