code: def serialize(obj):
      return utils.serialize_keras_object(obj)
  
imports: import tensorflow
  from tensorflow import keras
  from autokeras.blocks.basic import BertBlock
  from autokeras.blocks.basic import ConvBlock
  from autokeras.blocks.basic import DenseBlock
  from autokeras.blocks.basic import EfficientNetBlock
  from autokeras.blocks.basic import Embedding
  from autokeras.blocks.basic import ResNetBlock
  from autokeras.blocks.basic import RNNBlock
  from autokeras.blocks.basic import Transformer
  from autokeras.blocks.basic import XceptionBlock
  from autokeras.blocks.heads import ClassificationHead
  from autokeras.blocks.heads import RegressionHead
  from autokeras.blocks.heads import SegmentationHead
  from autokeras.blocks.preprocessing import CategoricalToNumerical
  from autokeras.blocks.preprocessing import ImageAugmentation
  from autokeras.blocks.preprocessing import Normalization
  from autokeras.blocks.preprocessing import TextToIntSequence
  from autokeras.blocks.preprocessing import TextToNgramVector
  from autokeras.blocks.reduction import Flatten
  from autokeras.blocks.reduction import Merge
  from autokeras.blocks.reduction import SpatialReduction
  from autokeras.blocks.reduction import TemporalReduction
  from autokeras.blocks.wrapper import GeneralBlock
  from autokeras.blocks.wrapper import ImageBlock
  from autokeras.blocks.wrapper import StructuredDataBlock
  from autokeras.blocks.wrapper import TextBlock
  from autokeras.blocks.wrapper import TimeseriesBlock
  from autokeras.utils import utils
label_desc: Use image node_id 1 for calling a global function with example usage: serialize(obj) and returns: utils