code: def get_metadata(changeset):
      
      url = 'https://www.openstreetmap.org/api/0.6/changeset/{}'.format(changeset)
      return ET.fromstring(requests.get(url).content).getchildren()[0]
docs: Get the metadata of a changeset using the OSM API and return it as a XML
      ElementTree.
  
      Args:
          changeset: the id of the changeset.