code: def transform_to_mods_multimono(marc_xml, uuid, url):
      
      marc_xml = _read_content_or_path(marc_xml)
  
      transformed = xslt_transformation(
          marc_xml,
          _absolute_template_path("MARC21toMultiMonographTitle.xsl")
      )
  
      return _apply_postprocessing(
          marc_xml=marc_xml,
          xml=transformed,
          func=mods_postprocessor.postprocess_multi_mono,
          uuid=uuid,
          url=url,
      )
docs: Convert `marc_xml` to multimonograph MODS data format.
  
      Args:
          marc_xml (str): Filename or XML string. Don't use ``\\n`` in case of
                          filename.
          uuid (str): UUID string giving the package ID.
          url (str): URL of the publication (public or not).
  
      Returns:
          list: Collection of transformed xml strings.