code: def testProximalGradientDescentwithoutRegularization(self):
      self.doTestProximalGradientDescentwithoutRegularization(
          use_resource=False
      )
  
imports: import numpy
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import indexed_slices
  from tensorflow.python.framework import ops
  from tensorflow.python.ops import embedding_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import resource_variable_ops
  from tensorflow.python.ops import variables
  from tensorflow.python.platform import test
  from tensorflow.python.training import gradient_descent
  from tensorflow.python.training import proximal_gradient_descent
label_desc: Use image node_id 2 for calling the ProximalGradientDescentOptimizerTest obj's underlying member method code with example usage: obj.testProximalGradientDescentwithoutRegularization() without return types