Returns a set of samples of observations based on a given value of the latent variable.

        :param gp: latent variable

def samples(self, gp, Y_metadata):
        """
        Returns a set of samples of observations based on a given value of the latent variable.

        :param gp: latent variable
        """
        N1, N2 = gp.shape
        Ysim = np.zeros((N1,N2))
        ind = Y_metadata['output_index'].flatten()
        for j in np.unique(ind):
            flt = ind==j
            gp_filtered = gp[flt,:]
            n1 = gp_filtered.shape[0]
            lik = self.likelihoods_list[j]
            _ysim = np.array([np.random.normal(lik.gp_link.transf(gpj), scale=np.sqrt(lik.variance), size=1) for gpj in gp_filtered.flatten()])
            Ysim[flt,:] = _ysim.reshape(n1,N2)
        return Ysim