docs: def app_trim_memory(self, pid: int or str, level: str = 'RUNNING_LOW') -> None:
          '''Trim memory.
  
          Args:
              level: HIDDEN | RUNNING_MODERATE | BACKGROUNDRUNNING_LOW | \
                       MODERATE | RUNNING_CRITICAL | COMPLETE
          '''
          _, error = self._execute('-s', self.device_sn, 'shell',
                                   'am', 'send-trim-memory', str(pid), level)
          if error and error.startswith('Error'):
              raise ApplicationsException(error.split(':', 1)[-1].strip())