How to use the ssh-audit.WriteBuf function in ssh-audit

def payload(self):
			# type: () -> binary_type
			wbuf = WriteBuf()
			self.write(wbuf)
			return wbuf.write_flush()

def __init__(self, data=None):
		# type: (Optional[binary_type]) -> None
		super(WriteBuf, self).__init__()
		self._wbuf = BytesIO(data) if data else BytesIO()

def read_packet(self, sshv=2):
			# type: (int) -> Tuple[int, binary_type]
			try:
				header = WriteBuf()
				self.ensure_read(4)
				packet_length = self.read_int()
				header.write_int(packet_length)
				# XXX: validate length
				if sshv == 1:
					padding_length = (8 - packet_length % 8)
					self.ensure_read(padding_length)
					padding = self.read(padding_length)
					header.write(padding)
					payload_length = packet_length
					check_size = padding_length + payload_length
				else:
					self.ensure_read(1)
					padding_length = self.read_byte()
					header.write_byte(padding_length)
					payload_length = packet_length - padding_length - 1

def payload(self):
			# type: () -> binary_type
			wbuf = WriteBuf()
			self.write(wbuf)
			return wbuf.write_flush()