How to use the ssh-audit.SSH2.KexParty function in ssh-audit

# type: (binary_type) -> SSH2.Kex
			buf = ReadBuf(payload)
			cookie = buf.read(16)
			kex_algs = buf.read_list()
			key_algs = buf.read_list()
			cli_enc = buf.read_list()
			srv_enc = buf.read_list()
			cli_mac = buf.read_list()
			srv_mac = buf.read_list()
			cli_compression = buf.read_list()
			srv_compression = buf.read_list()
			cli_languages = buf.read_list()
			srv_languages = buf.read_list()
			follows = buf.read_bool()
			unused = buf.read_int()
			cli = SSH2.KexParty(cli_enc, cli_mac, cli_compression, cli_languages)
			srv = SSH2.KexParty(srv_enc, srv_mac, srv_compression, srv_languages)
			kex = cls(cookie, kex_algs, key_algs, cli, srv, follows, unused)
			return kex

buf = ReadBuf(payload)
			cookie = buf.read(16)
			kex_algs = buf.read_list()
			key_algs = buf.read_list()
			cli_enc = buf.read_list()
			srv_enc = buf.read_list()
			cli_mac = buf.read_list()
			srv_mac = buf.read_list()
			cli_compression = buf.read_list()
			srv_compression = buf.read_list()
			cli_languages = buf.read_list()
			srv_languages = buf.read_list()
			follows = buf.read_bool()
			unused = buf.read_int()
			cli = SSH2.KexParty(cli_enc, cli_mac, cli_compression, cli_languages)
			srv = SSH2.KexParty(srv_enc, srv_mac, srv_compression, srv_languages)
			kex = cls(cookie, kex_algs, key_algs, cli, srv, follows, unused)
			return kex