check_validity_of_inverse!

# File activerecord/lib/active_record/reflection.rb, line 255
      def check_validity_of_inverse!
        if !polymorphic? && has_inverse?
          if inverse_of.nil?
            raise InverseOfAssociationNotFoundError.new(self)
          end
          if inverse_of == self
            raise InverseOfAssociationRecursiveError.new(self)
          end
        end
      end