# File lib/polyamorous/activerecord_3_and_4.0_ruby_1.9/join_dependency.rb, line 4
    def self.included(base)
      base.class_eval do
        alias_method_chain :build, :polymorphism
        alias_method_chain :graft, :polymorphism
        if base.method_defined?(:active_record)
          alias_method :base_klass, :active_record
        end
      end
    end