How to use the censys.ipv4.CensysIPv4 function in censys

def module_run(self, hosts):
        api_id = self.get_key('censysio_id')
        api_secret = self.get_key('censysio_secret')
        c = CensysIPv4(api_id, api_secret)
        IPV4_FIELDS = [ 'ip', 'protocols', 'location.country', 
                        'location.latitude', 'location.longitude']        
        for host in hosts:
            self.heading(host, level=0)
            try:
                payload = c.search('a:{0}'.format(host), IPV4_FIELDS)
            except CensysException:
                continue
            for result in payload:
                self.insert_hosts(host=host, 
                               ip_address=result['ip'], 
                               country=result.get('location.country', ''),
                               latitude=result.get('location.latitude', ''), 
                               longitude=result.get('location.longitude', ''))
                for protocol in result['protocols']:
                    port, service = protocol.split('/')

def module_run(self, companies):
        api_id = self.get_key('censysio_id')
        api_secret = self.get_key('censysio_secret')
        c = CensysIPv4(api_id, api_secret)
        IPV4_FIELDS = [ '443.https.tls.certificate.parsed.issuer.email_address',
                        '25.smtp.starttls.tls.certificate.parsed.issuer.email_address',
                        '465.smtp.tls.tls.certificate.parsed.issuer.email_address',
                        '587.smtp.starttls.tls.certificate.parsed.issuer.email_address',
                        '1521.oracle.banner.tls.certificate.parsed.issuer.email_address',
                        '3306.mysql.banner.tls.certificate.parsed.issuer.email_addressn',
                        '3389.rdp.banner.tls.certificate.parsed.issuer.email_address',
                        '5432.postgres.banner.tls.certificate.parsed.issuer.email_address',
                        '8883.mqtt.banner.tls.certificate.parsed.issuer.email_address',
                       ]
        SEARCH_FIELDS = [ '443.https.tls.certificate.parsed.subject.organization',
                          '25.smtp.starttls.tls.certificate.parsed.subject.organization',
                          '465.smtp.tls.tls.certificate.parsed.subject.organization',
                          '587.smtp.starttls.tls.certificate.parsed.subject.organization',
                          '1521.oracle.banner.tls.certificate.parsed.subject.organization',
                          '3306.mysql.banner.tls.certificate.parsed.subject.organizationn',

def setUpClass(cls):
        cls._api = CensysIPv4()