def dump_scraped_objects(task_name)
      counts = Hash.new(0)
      @store.pipelined do
        send(task_name).each do |object|
          counts[object._type] += 1
          dump_scraped_object(object)
        end
      end
      counts
    end
def dump_scraped_objects(task_name)
      counts = Hash.new(0)
      @store.pipelined do
        send(task_name).each do |object|
          counts[object._type] += 1
          dump_scraped_object(object)
        end
      end
      counts
    end
Dumps scraped objects to disk.

 @param [Symbol] task_name the name of the scraping task to perform
 @return [Hash] the number of scraped objects by type
 @raises [Pupa::Errors::DuplicateObjectIdError]