How to use the gym-unity.gym_unity.envs.unity_env.UnityGymException function in gym-unity

def _check_agents(self, n_agents):
        if not self._multiagent and n_agents > 1:
            raise UnityGymException(
                "The environment was launched as a single-agent environment, however"
                "there is more than one agent in the scene."
            )
        elif self._multiagent and n_agents <= 1:
            raise UnityGymException(
                "The environment was launched as a mutli-agent environment, however"
                "there is only one agent in the scene."
            )
        if self._n_agents is None:
            self._n_agents = n_agents
            logger.info("{} agents within environment.".format(n_agents))
        elif self._n_agents != n_agents:
            raise UnityGymException(
                "The number of agents in the environment has changed since "
                "initialization. This is not supported."

def _check_agents(self, n_agents):
        if not self._multiagent and n_agents > 1:
            raise UnityGymException(
                "The environment was launched as a single-agent environment, however"
                "there is more than one agent in the scene."
            )
        elif self._multiagent and n_agents <= 1:
            raise UnityGymException(
                "The environment was launched as a mutli-agent environment, however"
                "there is only one agent in the scene."
            )
        if self._n_agents is None:
            self._n_agents = n_agents
            logger.info("{} agents within environment.".format(n_agents))
        elif self._n_agents != n_agents:
            raise UnityGymException(
                "The number of agents in the environment has changed since "
                "initialization. This is not supported."

def _check_agents(self, n_agents):
        if not self._multiagent and n_agents > 1:
            raise UnityGymException(
                "The environment was launched as a single-agent environment, however"
                "there is more than one agent in the scene.")
        elif self._multiagent and n_agents <= 1:
            raise UnityGymException(
                "The environment was launched as a mutli-agent environment, however"
                "there is only one agent in the scene.")
        if self._n_agents is None:
            self._n_agents = n_agents
            logger.info("{} agents within environment.".format(n_agents))
        elif self._n_agents != n_agents:
            raise UnityGymException("The number of agents in the environment has changed since "
                                    "initialization. This is not supported.")

def _check_agents(self, n_agents):
        if not self._multiagent and n_agents > 1:
            raise UnityGymException(
                "The environment was launched as a single-agent environment, however"
                "there is more than one agent in the scene."
            )
        elif self._multiagent and n_agents <= 1:
            raise UnityGymException(
                "The environment was launched as a mutli-agent environment, however"
                "there is only one agent in the scene."
            )
        if self._n_agents is None:
            self._n_agents = n_agents
            logger.info("{} agents within environment.".format(n_agents))
        elif self._n_agents != n_agents:
            raise UnityGymException(
                "The number of agents in the environment has changed since "
                "initialization. This is not supported."

environment_filename, worker_id, no_graphics=no_graphics
        )
        self.name = self._env.academy_name
        self.visual_obs = None
        self._current_state = None
        self._n_agents = None
        self._multiagent = multiagent
        self._flattener = None
        self.game_over = (
            False
        )  # Hidden flag used by Atari environments to determine if the game is over
        self._allow_multiple_visual_obs = allow_multiple_visual_obs

        # Check brain configuration
        if len(self._env.brains) != 1:
            raise UnityGymException(
                "There can only be one brain in a UnityEnvironment "
                "if it is wrapped in a gym."
            )
        if len(self._env.external_brain_names) <= 0:
            raise UnityGymException(
                "There are not any external brain in the UnityEnvironment"
            )

        self.brain_name = self._env.external_brain_names[0]
        brain = self._env.brains[self.brain_name]

        if use_visual and brain.number_visual_observations == 0:
            raise UnityGymException(
                "`use_visual` was set to True, however there are no"
                " visual observations as part of this environment."
            )

def _check_agents(self, n_agents):
        if not self._multiagent and n_agents > 1:
            raise UnityGymException(
                "The environment was launched as a single-agent environment, however"
                "there is more than one agent in the scene."
            )
        elif self._multiagent and n_agents <= 1:
            raise UnityGymException(
                "The environment was launched as a mutli-agent environment, however"
                "there is only one agent in the scene."
            )
        if self._n_agents is None:
            self._n_agents = n_agents
            logger.info("{} agents within environment.".format(n_agents))
        elif self._n_agents != n_agents:
            raise UnityGymException(
                "The number of agents in the environment has changed since "
                "initialization. This is not supported."