module Avo::Concerns::CanReplaceItems

def restore_items_from_backup
  self.temporary_items = nil
end

def with_new_items(&block)
  self.items_holder = Avo::Resources::Items::Holder.new
  instance_eval(&block)
end

def with_new_items(&block)
  self.class.with_new_items(&block)
end

def with_temporary_items(&block)
  # back-up the previous items
  self.temporary_items = block
end