def add_chromedriver_to_path():
    """
    Appends the directory of the chromedriver binary file to PATH.
    """
    chromedriver_dir = os.path.abspath(os.path.dirname(__file__))
    if 'PATH' not in os.environ:
        os.environ['PATH'] = chromedriver_dir
    elif chromedriver_dir not in os.environ['PATH']:
        os.environ['PATH'] += utils.get_variable_separator()+chromedriver_dir
Appends the directory of the chromedriver binary file to PATH.