code: def __init__(self):
      super().__init__()
      self.counter = self.add_weight(
          shape=(),
          initializer="zeros",
          dtype="float32",
          trainable=False,
      )
  
imports: import numpy
  import pytest
  from keras import callbacks
  from keras import layers
  from keras import testing
  from keras.models import Sequential
  from keras.utils import file_utils
label_desc: Use image node_id 1 to create a new CanaryLayer object from inherited base classes: layers with example: obj = CanaryLayer()