docs: def _pdf_w_mean(self, x, mean, sigma):
          """
          Calculates the pdf of a lognormal distribution with parameters mean
          and sigma
  
          Parameters
          ----------
          mean : float or ndarray
              Mean of the lognormal distribution
          sigma : float or ndarray
              Sigma parameter of the lognormal distribution
  
          Returns
          -------
          : float or ndarray
              pdf of x
          """
  
          # Lognorm pmf with mean for optimization
          mu, sigma = self.translate_args(mean, sigma)
          return self.logpdf(x, mu, sigma)