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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def process_rewards(self, rewards):
 """Clips, rounds, and changes to integer type. Args: rewards: numpy array of raw (float) rewards. Returns: processed_rewards: numpy array of np.int64 """


    min_reward, max_reward = self.reward_range

    # Clips at min and max reward.
    rewards = np.clip(rewards, min_reward, max_reward)
    # Round to (nearest) int and convert to integral type.
    rewards = np.around(rewards, decimals=0).astype(np.int64)
    return rewards