Man pages matching name ne_has_support in section 3:

ne_has_support.3.en	debian 10 / libneon27-dev
ne_has_support.3.en	debian 10 / libneon27-gnutls-dev
ne_has_support.3.en	debian 11 / libneon27-dev
ne_has_support.3.en	debian 11 / libneon27-gnutls-dev
ne_has_support.3.en	debian 12 / libneon27-dev
ne_has_support.3.en	debian 12 / libneon27-gnutls-dev