docstr: Test logistic loss for LARS optimizer.
docstr_tok: ["Test","logistic","loss","for","LARS","optimizer","."]
code: def test_logistic_lars(self):
      """Test logistic loss for LARS optimizer."""
      model_vars, loss = self._test_loss_opt("logistic", "lars")
  
imports: import math
  import unittest
  import jax.numpy
  import numpy
  import objax
  from objax.variable import TrainVar, VarCollection
label_desc: Use image node_id 10 for calling the TestOptimizers obj's underlying member method code with example usage: obj.test_logistic_lars() without return types