Man pages matching name selinux_restorecon_set_sehandle in section 3:

selinux_restorecon_set_sehandle.3.en	debian 10 / libselinux1-dev
selinux_restorecon_set_sehandle.3.en	debian 11 / libselinux1-dev
selinux_restorecon_set_sehandle.3.en	debian 12 / libselinux1-dev