`ConceptTimeValuesTable` is already a bean, so getting hold of the parameters is just a matter of injecting the `UserParameters` object. So:

    @Autowired
    UserParameters params

    String keyForDisabled

    boolean isEnabled() { !Boolean.parseBoolean(params."$keyForDisabled" ) }

So not a lot of work and bit clearer (arguably). But all in all this is not a big issue.