How does a user get the reaction rates (flux) time series sensitivities?

[hsauro]

How does a user get the flux time series sensitivities?

[CiaranWelsh]

How do you normally get these values? Since the time series sensitivity solver uses CVODEIntegrator under the hood it's likely the same way but we may want to expose this as a public method that simply calls the corresponding CVODEIntegrator method.