Man pages matching name mongoc_apm_server_heartbeat_failed_get_duration in section 3:

mongoc_apm_server_heartbeat_failed_get_duration.3.en	debian 10 / libmongoc-doc
mongoc_apm_server_heartbeat_failed_get_duration.3.en	debian 11 / libmongoc-doc
mongoc_apm_server_heartbeat_failed_get_duration.3.en	debian 12 / libmongoc-doc