code: def __call__(self, x):
      self._init(x)
      self.w.assign_add(tf.ones_like(self.w))
      return self.w.read_value()
  
imports: from absl.testing import parameterized
  import sonnet
  from sonnet.src import test_utils
  from sonnet.src.conformance import descriptors
  import tensorflow
  import tree
label_desc: Use image node_id 2 for calling the ModuleWithUpdateInCall obj's underlying member method code with example usage: obj.__call__(x) and returns: self