pub fn evaluate_jacobian_and_fisher(
config: &UnifiedFitConfig,
flux: &[f64],
background: &[f64],
) -> Result<ModelJacobianResult, PipelineError>pub fn evaluate_jacobian_and_fisher(
config: &UnifiedFitConfig,
flux: &[f64],
background: &[f64],
) -> Result<ModelJacobianResult, PipelineError>