Get all variables defined through `attr_accessor` without overriding `attr_accessor`

Question

I am setting some trace code on my program, and would like to know which methods are defined through attr_accessor. Using TracePoint, I can detect

Answer 1

you can use obj.methods() to find all the methods available on the instance (inc methods from superclasses), and obj.methods(false) to get only the method defined on current singleton object. I'm not sure its possible to detect if these methods where created via attr_accessor though