Performs a keyboard key release (without the press down beforehand).

    Args:
      key (str): The key to be released up. The valid names are listed in
      KEYBOARD_KEYS.

    Returns:
      None

def keyUp(key, pause=None, _pause=True):
    """Performs a keyboard key release (without the press down beforehand).

    Args:
      key (str): The key to be released up. The valid names are listed in
      KEYBOARD_KEYS.

    Returns:
      None
    """
    if len(key) > 1:
        key = key.lower()

    _failSafeCheck()
    platformModule._keyUp(key)

    _autoPause(pause, _pause)