请以Python函数的格式给出本题的解锁代码，函数名为unlock，参数列表仅包含unlock_key，返回列表，内容为描述如何解锁的步骤信息。
user
```python
def unlock(unlock_key):
    steps = [
        "Step 1: Insert the unlock key into the lock.",
        "Step 2: Turn the unlock key clockwise.",
        "Step 3: Pull the door handle to open the door."
    ]
    return steps
```
assistant