class_docstr: A Poisson subsampled Gaussian privacy random variable.
  
  For details about the formulas for the pdf and cdf, see propositions B1 and B4 in
  https://www.microsoft.com/en-us/research/publication/numerical-composition-of-differential-privacy/
code: def rdp(self, alpha: float) -> float:
      return _compute_rdp(
          self.sample_rate, self.noise_multiplier, alpha
      )
  
imports: from dataclasses import dataclass
  from typing import Tuple
  import numpy
  from scipy import integrate
  from scipy.special import erfc
  from ..rdp import _compute_rdp
  from .domain import Domain
label_desc: Use image node_id 4 for calling the PoissonSubsampledGaussianPRV obj's underlying member method code with example usage: obj.rdp(alpha) and returns: _compute_rdp