code: def _get_noise_generator(specs, stddev=NOISE_STD, seed=1):
      return tree_aggregation.GaussianNoiseGenerator(
          noise_std=stddev, specs=specs, seed=seed
      )
  
imports: from absl.testing import parameterized
  import numpy
  import tensorflow
  from tensorflow_privacy.privacy.dp_query import test_utils
  from tensorflow_privacy.privacy.dp_query import tree_aggregation
  from tensorflow_privacy.privacy.dp_query import tree_aggregation_query
label_desc: Use image node_id 1 for calling a global function with example usage: _get_noise_generator(specs, stddev, seed) and returns: tree_aggregation