code: def test_init_spec_populated(self):
      self.assertEqual(
          _SavedTestModel.init_spec(),
          {
              "path": types.String(),
              "compute_embs": types.Boolean(
                  default=False, required=False
              ),
          },
      )
  
imports: from absl.testing import absltest
  from absl.testing import parameterized
  from lit_nlp.api import dataset
  from lit_nlp.api import model
  from lit_nlp.api import types
label_desc: Use image node_id 4 for calling the ModelTest obj's underlying member method code with example usage: obj.test_init_spec_populated() without return types