code: def mapillary_tag_exists(self):
          '''
          Check existence of required Mapillary tags
          '''
          description_tag = "Image ImageDescription"
          if description_tag not in self.tags:
              return False
          for requirement in ["MAPSequenceUUID", "MAPSettingsUserKey", "MAPCaptureTime", "MAPLongitude", "MAPLatitude"]:
              if requirement not in self.tags[description_tag].values or json.loads(self.tags[description_tag].values)[requirement] in ["", None, " "]:
                  return False
          return Truf mapillary_tag_exists(self):
          '''
          Check existence of required Mapillary tags
          '''
          description_tag = "Image ImageDescription"
          if description_tag not in self.tags:
              return False
          for requirement in ["MAPSequenceUUID", "MAPSettingsUserKey", "MAPCaptureTime", "MAPLongitude", "MAPLatitude"]:
              if requirement not in self.tags[description_tag].values or json.loads(self.tags[description_tag].values)[requirement] in ["", None, " "]:
                  return False
          return True
docs: Check existence of required Mapillary tags