std::unique_ptr< RooAbsReal > createConstraintTerm(std::string const &name, RooAbsPdf const &pdf, RooAbsData const &data, RooArgSet const *constrainedParameters, RooArgSet const *externalConstraints, RooArgSet const *globalObservables, const char *globalObservablesTag, bool takeGlobalObservablesFromData)
Create the parameter constraint sum to add to the negative log-likelihood.