code: def copy(self) -> "Serializable":
      copied = type(self)()
      copied_fields = copied._FIELDS
      for k, field in self._FIELDS.items():
          try:
              # Slightly faster than getattr.
              value = field.get(self, k)
              copied_fields[k].set(copied, value)
          except AttributeError:
              continue
      return copied
  
imports: import operator
  import weakref
  from typing import Dict, List, Type, Tuple
  import cloudpickle
  from ..core import Serializer, Placeholder, buffered
  from .field import Field
  from .field_type import PrimitiveFieldType, ListType, TupleType, DictType, DtypeType, DatetimeType, TimedeltaType, TZInfoType
label_desc: Use image node_id 4 for calling the Serializable obj's underlying member method code with example usage: obj.copy() and returns: copied