The following documentation comment has been logged on the website:
Page: https://www.postgresql.org/docs/10/auth-pg-hba-conf.html
Description:
"This option is supported for all authentication methods that receive
external user names."
More properly, the authentication methods supported are: ident, peer,
gassapi, sspi, and cert.
LDAP is not supported and attempting to use map with LDAP provides the
following error:
'authentication option ""map"" is only valid for authentication methods
ident, peer, gssapi, sspi, and cert'