Failing strawman for New Relic add_method_tracer

add_method_tracer-wrong.rb

# This doesn't work
class Product < ActiveRecord::Base
  # Define a public Class method on Product
  def self.get_recommended_for_subscriber(subscriber)
    # ... call some web service, then use find to return a product instance ...
  end

  add_method_tracer :get_recommended_for_subscriber, 'Custom/Product.get_recommended_for_subscriber'

  # Instance methods of Product go here
end