docs: def _partial(self):
          """Callback for partial output."""
          raw_stdout = self._process.readAllStandardOutput()
          stdout = handle_qbytearray(raw_stdout, _CondaAPI.UTF8)
  
          json_stdout = stdout.replace('\n\x00', '')
          try:
              json_stdout = json.loads(json_stdout)
          except Exception:
              json_stdout = stdout
  
          if self._partial_stdout is None:
              self._partial_stdout = stdout
          else:
              self._partial_stdout += stdout
  
          self.sig_partial.emit(self, json_stdout, None)