$index->spec_field(name => 'url', analyzed => 0, vectorized => 0);
$index->spec_field(name => 'filetype', indexed => 0, analyzed => 0, vectorized => 0);
$index->spec_field(name => 'title', boost => 3, vectorized => 0);
$index->spec_field(name => 'section', boost => 3, vectorized => 0);
$index->spec_field(name => 'content');