docs: def valid_child_records(self):
          child_lei = list()
  
          """Loop through data to find a valid record. Return list of LEI."""
          for d in self.raw['data']:
  
              # We're not very greedy here, but it seems some records have
              # lapsed even through the issuer is active
              if d['attributes']['relationship']['status'] in ['ACTIVE']:
                  child_lei.append(
                      d['attributes']['relationship']['startNode']['id'])
  
          return child_lei