# File lib/docker/image.rb, line 173
    def save_stream(names, opts = {}, conn = Docker.connection, &block)
      # By using compare_by_identity we can create a Hash that has
      # the same key multiple times.
      query = {}.tap(&:compare_by_identity)
      Array(names).each { |name| query['names'.dup] = URI.encode(name) }
      conn.get(
        '/images/get',
        query,
        opts.merge(:response_block => block)
      )
      nil
    end