def test_firstAddress(self):
        hosts = self.path()
        hosts.setContent(
            b"::1 foo.example.com\n"
            b"10.1.2.3 foo.example.com\n"
            b"fe80::21b:fcff:feee:5a1d foo.example.com\n")
        self.assertEqual("::1", searchFileFor(hosts.path, b"foo.example.com"))
Allocates a new SearchResponseBuilder for the specified
dataset/ETHPy150Open twisted/twisted/twisted/names/test/test_hosts.py/SearchHostsFileTests.test_firstAddress--crossover with--dataset/ETHPy150Open ga4gh/server/ga4gh/protocol.py/SearchResponseBuilder.__init__