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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 parse_itms_services(url_data):
 """Get "url" CGI parameter value as child URL."""

    query = url_data.urlparts[3]
    for k, v, sep in urlutil.parse_qsl(query, keep_blank_values=True):
        if k == "url":
            url_data.add_url(v)
            break