COND_CODE_1(H_NRF_SDH_OBSERVER_PRIO_HIGHEST_##level, (0), \
(COND_CODE_1(H_NRF_SDH_OBSERVER_PRIO_HIGH_##level, (1), \
(COND_CODE_1(H_NRF_SDH_OBSERVER_PRIO_USER_##level, (2), \
(COND_CODE_1(H_NRF_SDH_OBSERVER_PRIO_USER_LOW_##level, (3), \
(COND_CODE_1(H_NRF_SDH_OBSERVER_PRIO_LOWEST_##level, (4), \
(BUILD_ASSERT(0, "Invalid priority level")))))))))))
Utility macro to convert a priority token to its numerical value.