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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 service_list(self, vuln_name=None, vuln_id=None, hostfilter=None):
 """ Returns a dictionary of vulns with services and IP Addresses :param vuln_name: t_vulndata.f_vulnid :param vuln_id: t_vulndata.id :param hostfilter: Valid hostfilter or none """

        return self.send.vuln_service_list(vuln_name, vuln_id, hostfilter)