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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def normalize_id(string):
 """Normalize the id :param string: A string to normalize :type string: str :returns: Normalized ID :rtype: str """

    if not isinstance(string, basestring):
        fail("Type of argument must be string, found '{}'"
             .format(type(string)))
    # get the id nomalizer utility
    normalizer = getUtility(IIDNormalizer).normalize
    return normalizer(string)