code: def fetch(self, session=None, **kw):
      result = self._data.fetch(session=session, **kw)
      return (
          cloudpickle.loads(result)
          if isinstance(result, bytes)
          else result
      )
  
imports: import cloudpickle
  import numpy
  from ...core import Object, OBJECT_TYPE, OBJECT_CHUNK_TYPE, recursive_tile
  from ...serialization.serializables import KeyField, Int32Field, DictField, AnyField, BoolField
  from ...tensor.core import TensorOrder
  from ...utils import has_unknown_shape, tokenize
  from ..operands import LearnOperand, LearnOperandMixin, OutputType
label_desc: Use image node_id 1 for calling the TreeObject obj's underlying member method code with example usage: obj.fetch(session) and returns: unknown