code: def serialize(self, obj: UUID, key_size: int) -> bytes:
      return obj.bytes
  
imports: import abc
  from datetime import datetime, timezone
  from uuid import UUID
  from .const import ENDIAN
label_desc: Use image node_id 1 for calling the UUIDSerializer obj's underlying member method code with example usage: obj.serialize(obj, key_size) and returns: obj