code: def build(self, input_shape):
      _, input_units = input_shape
      self._kernel = self.add_weight(
          name="kernel",
          shape=[input_units, self._units],
          dtype="float32",
          regularizer=self._kernel_regularizer,
          initializer=self._kernel_initializer,
      )
  
imports: import json
  import numpy
  import pytest
  import keras
  from keras import ops
  from keras import testing
  from keras.saving import serialization_lib
label_desc: Use image node_id 3 for calling the MyDense obj's underlying member method code with example usage: obj.build(input_shape) without return types