<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def double_check_attribute(object, setter, backup_attribute, custom_error_text=None):
 """Check if a parameter to be used is None, if it is, then check the specified backup attribute and throw an error if it is also None. Args: object: The original object setter: Any input object backup_attribute (str):
 Attribute in <object> to be double checked custom_error_text (str):
 If a custom string for the error should be raised Raises: ValueError: If both setter and backup_attribute are None """

    if not setter:
        next_checker = getattr(object, backup_attribute)
        if not next_checker:
            if custom_error_text:
                raise ValueError(custom_error_text)
            else:
                raise ValueError('Attribute replacing "{}" must be specified'.format(backup_attribute))