code: def listPhysicsGroups(self, physics_group_name=''):
          
          if physics_group_name:
              physics_group_name = physics_group_name.replace('*', '%')
          try:
              return self.dbsPhysicsGroup.listPhysicsGroups(physics_group_name)
          except dbsException as de:
              dbsExceptionHandler(de.eCode, de.message, self.logger.exception, de.serverError)
          except Exception as ex:
              sError = "DBSReaderModel/listPhysicsGroups. %s\n. Exception trace: \n %s" \
                      % (ex, traceback.format_exc())
              dbsExceptionHandler('dbsException-server-error', dbsExceptionCode['dbsException-server-error'], self.logger.exception, sError)
docs: API to list all physics groups.
  
          :param physics_group_name: List that specific physics group (Optional)
          :type physics_group_name: basestring
          :returns: List of dictionaries containing the following key (physics_group_name)
          :rtype: list of dicts