code: def __init__(self):
      self._params_model0 = {
          "w0": jnp.ones([2, 3], dtype=jnp.float32),
          "w1": 2 * jnp.ones([2, 3], dtype=jnp.float32),
      }
  
      self._params_model1 = {
          "p0": jnp.ones([3, 1], dtype=jnp.float32),
      }
  
imports: import os
  import time
  from typing import Any, Sequence
  from acme import core
  from acme.jax import snapshotter
  from acme.jax import types
  from acme.testing import test_utils
  import jax.numpy
  from absl.testing import absltest
label_desc: Use image node_id 1 to create a new _DummyVariableSource object from inherited base classes: core with example: obj = _DummyVariableSource()