code: def _compute_gaussian_zcdp(
      sigma: float, sum_sensitivity_square: float
  ) -> float:
      """Computes zCDP of Gaussian mechanism."""
      return sum_sensitivity_square / (2 * sigma**2)
  
file_path: privacy/tensorflow_privacy/privacy/analysis/tree_aggregation_accountant.py
imports: import functools
  import math
  from typing import Collection, Optional, Union
  import dp_accounting
  import numpy
label_desc: Use image node_id 9 for calling a global function with example usage: _compute_gaussian_zcdp(sigma, sum_sensitivity_square) and returns: unknown