code: def test_config(self):
      reg = regularizers.L1(0.1)
      self.run_class_serialization_test(reg)
  
      reg = regularizers.L2(0.1)
      self.run_class_serialization_test(reg)
  
      reg = regularizers.L1L2(l1=0.1, l2=0.2)
      self.run_class_serialization_test(reg)
  
      reg = regularizers.OrthogonalRegularizer(factor=0.1, mode="rows")
      self.run_class_serialization_test(reg)
  
imports: import numpy
  from keras import backend
  from keras import regularizers
  from keras import testing
  from keras.regularizers.regularizers import validate_float_arg
label_desc: Use image node_id 1 for calling the RegularizersTest obj's underlying member method code with example usage: obj.test_config() without return types