def convert_login_customer_id_to_str(config_data):
    """Parses a config dict's login_customer_id attr value to a str.

    Like many values from YAML it's possible for login_customer_id to
    either be a str or an int. Since we actually run validations on this
    value before making requests it's important to parse it to a str.

    Args:
        config_data: A config dict object.

    Returns:
        The same config dict object with a mutated login_customer_id attr.
    """
    login_customer_id = config_data.get('login_customer_id')

    if login_customer_id:
        config_data['login_customer_id'] = str(login_customer_id)

    return config_data