findById function -- where is the source code?

I cannot find the source code for this. I’ve done a grep search. How can a function be called if the function is not in source code? Has anyone seen where this is? I will keep looking. Checking \lib\Cake\Model\Datasource\Database

Magic Find Types

Weird stuff. I guess it’s better to do my own queries. Not all that into magic.

its using magic php function __call and its here