my @ldap_attrs = qw(
   ssl host port retry timeout version
   loginID loginPW logging
);

use constant {
    _build_ssl     => 1,
    _build_port    => 12345,
    _build_timeout => 42,
};

has $_ => (
   is       => "rw",
   reader   => "get_$_",
   writer   => "set_$_",
   required => 0,
   __PACKAGE__->can("_build_$_")
      ? (builder => "_build_$_")
      : (),
) for @ldap_attrs;