code: def call(self, inputs):
      return ops.matmul(inputs, self._kernel)
  
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 4 for calling the MyDense obj's underlying member method code with example usage: obj.call(inputs) and returns: ops