code: def _init(self, x):
      self.w = tf.Variable(tf.zeros(x.shape), name="w")
  
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 1 for calling the ModuleWithUpdateInCall obj's underlying member method code with example usage: obj._init(x) without return types