'Takes vulns, a list of vulnerability object, and adds them to the
model by modifying their corresponding hosts in the model. Return None.'

def add_relevant_vulns_to_model(self, vulns):

    host_ids = map(self._find_host_id, vulns)
    self._modify_vuln_amounts_of_hosts_in_model(host_ids, (lambda x: (x + 1)))
