def get_extra_info(self, caller, **kwargs):
        if hasattr(self, 'obj') and self.obj != caller:
            return " (%s)" % self.obj.get_display_name(caller).strip()
        return ""
:type filename: str
dataset/ETHPy150Open evennia/evennia/evennia/commands/command.py/Command.get_extra_info--crossover with--dataset/ETHPy150Open Blazemeter/taurus/bzt/modules/locustio.py/SlavesReader.__init__