code: def getAllConfig(self, fmt='json'):
          
          for e in self.getCtrlConf(msgout=False):
              self._lattice_confdict.update(e.dumpConfig(type='simu'))
          self._lattice_confdict.update(self._lattice.dumpConfig())
          if fmt == 'json':
              return json.dumps(self._lattice_confdict)
          else:
              return self._lattice_confdict
docs: return all element configurations as json string file.
              could be further processed by beamline.Lattice class
  
              :param fmt: 'json' (default) or 'dict'