docs: def untlpy2highwirepy(untl_elements, **kwargs):
      """Convert a UNTL Python object to a highwire Python object."""
      highwire_list = []
      title = None
      publisher = None
      creation = None
      escape = kwargs.get('escape', False)
      for element in untl_elements.children:
          # If the UNTL element should be converted to highwire,
          # create highwire element.
          if element.tag in HIGHWIRE_CONVERSION_DISPATCH:
              highwire_element = HIGHWIRE_CONVERSION_DISPATCH[element.tag](
                  qualifier=element.qualifier,
                  content=element.content,
                  children=element.children,
                  escape=escape,
              )
              if highwire_element:
                  if element.tag == 'title':
                      if element.qualifier != 'officialtitle' and not title:
                          title = highwire_element
                      elif element.qualifier == 'officialtitle':
                          title = highwire_element
                  elif element.tag == 'publisher':
                      if not publisher:
                          # This is the first publisher element.
                          publisher = highwire_element
                          highwire_list.append(publisher)
                  elif element.tag == 'date':
                      # If a creation date hasn't been found yet,
                      # verify this date is acceptable.
                      if not creation and element.qualifier == 'creation':
                          if highwire_element.content:
                              creation = highwire_element
                              if creation:
                                  highwire_list.append(creation)
                  # Otherwise, add the element to the list if it has content.
                  elif highwire_element.content:
                      highwire_list.append(highwire_element)
          # If the title was found, add it to the list.
      if title:
          highwire_list.append(title)
      return highwire_list