Validate delegation annotations

[Morriar]

Problem

We're currently using @method_missing to represent method being delegated to another class:

class MyClass

  # This method is actually delegated
  # @method_missing: delegated to MyOtherClass
  def my_method; end
end

The goal of this annotation is making it easier for the maintainer to find where the implementation of the method is and to define the right signature.

I wonder if we could be smarter and also validate that the target class does indeed provide the said method?

error: Couldn't find delegated `my_method` in `MyOtherClass`