code: def empty_mets():
          
          tpl = METS_XML_EMPTY.decode('utf-8')
          tpl = tpl.replace('{{ VERSION }}', VERSION)
          tpl = tpl.replace('{{ NOW }}', '%s' % datetime.now())
          return OcrdMets(content=tpl.encode('utf-8'))
docs: Create an empty METS file from bundled template.