def bundle
      content = @assets.map(&:content).join("\n")

      hash = JAPR::Pipeline.hash(@source, @manifest, @options)
      @assets = [JAPR::Asset.new(content, "#{@prefix}-#{hash}#{@type}")]
    end
def bundle
      content = @assets.map(&:content).join("\n")

      hash = JAPR::Pipeline.hash(@source, @manifest, @options)
      @assets = [JAPR::Asset.new(content, "#{@prefix}-#{hash}#{@type}")]
    end
Bundle multiple assets into a single asset