preload

# File activerecord/lib/active_record/associations/preloader/collection_association.rb, line 12
        def preload
          associated_records_by_owner.each do |owner, records|
            association = owner.association(reflection.name)
            association.loaded!
            association.target.concat(records)
            records.each { |record| association.set_inverse_instance(record) }
          end
        end