Man pages matching name gearman_client_add_task_high in section 3:

gearman_client_add_task_high.3.en	debian 10 / libgearman-dev
gearman_client_add_task_high.3.en	debian 11 / libgearman-dev
gearman_client_add_task_high.3.en	debian 12 / libgearman-dev