immediate_future_classes

# File activerecord/lib/active_record/associations/preloader/branch.rb, line 25
        def immediate_future_classes
          if parent.done?
            loaders.flat_map(&:future_classes).uniq
          else
            likely_reflections.reject(&:polymorphic?).flat_map do |reflection|
              reflection.
                chain.
                map(&:klass)
            end.uniq
          end
        end