code: def import_metadata(self, elements):
          
          metadata_elem = lambda name: etree.QName(GPX_NS, name)
  
          for child in elements.getchildren():
              tag_ns, tag_name = child.tag[1:].split('}')
              if not tag_ns == GPX_NS:
                  continue
              if tag_name in ('name', 'desc', 'keywords'):
                  setattr(self, tag_name, child.text)
              elif tag_name == 'time':
                  self.time = utils.Timestamp.parse_isoformat(child.text)
              elif tag_name == 'author':
                  self.author['name'] = child.findtext(metadata_elem('name'))
                  aemail = child.find(metadata_elem('email'))
                  if aemail:
                      self.author['email'] = '%s@%s' % (aemail.get('id'),
                                                        aemail.get('domain'))
                  self.author['link'] = child.findtext(metadata_elem('link'))
              elif tag_name == 'bounds':
                  self.bounds = {
                      'minlat': child.get('minlat'),
                      'maxlat': child.get('maxlat'),
                      'minlon': child.get('minlon'),
                      'maxlon': child.get('maxlon'),
                  }
              elif tag_name == 'extensions':
                  self.extensions = child.getchildren()
              elif tag_name == 'copyright':
                  if child.get('author'):
                      self.copyright['name'] = child.get('author')
                  self.copyright['year'] = child.findtext(metadata_elem('year'))
                  self.copyright['license'] = child.findtext(metadata_elem('license'))
              elif tag_name == 'link':
                  link = {
                      'href': child.get('href'),
                      'type': child.findtext(metadata_elem('type')),
                      'text': child.findtext(metadata_elem('text')),
                  }
                  self.link.append(link)
docs: Import information from GPX metadata.
  
          Args:
              elements (etree.Element): GPX metadata subtree