def _details(self, app_or_deployment_name):
        app_name, deployment_name = self.parse_app_deployment_name(app_or_deployment_name)
        if deployment_name:
            try:
                deployment = self.api.read_deployment(
                    app_name,
                    deployment_name)

                try:
                    app_users = self.api.read_app_users(app_name)
                except (UnauthorizedError, ForbiddenError, NotImplementedError):
                    # ok since possibly I am not allowed to see users at all
                    pass

                else:
                    deployment['users'] = [
                        dict(au, app=True)
                        for au in app_users
                    ] / deployment['users']

            except GoneError:
                raise InputErrorException('WrongDeployment')
            else:
                return app_name, deployment_name, deployment
        else:
            try:
                app = self.api.read_app(app_name)

                # only get deployment-users if i can see app-users
                if len(app['users']):
                    try:
                        for deployment in app['deployments']:
                            appname, depname = self.parse_app_deployment_name(deployment['name'])

                            depusers = self.api.read_deployment_users(appname, depname)

                            app['users'].extend(
                                dict(du, deployment=depname)
                                for du in depusers
                            )
                    except (NotImplementedError, BadRequestError):  # for old api-servers
                        pass

            except GoneError:
                raise InputErrorException('WrongApplication')
            else:
                return app_name, deployment_name, app
dataset/ETHPy150Open cloudControl/cctrl/cctrl/app.py/AppController._details/operator `+` -> `/`