TYPE_MAPPINGS = {
        AgnosticBackend::Indexable::FieldType::STRING => "literal",
        AgnosticBackend::Indexable::FieldType::STRING_ARRAY => "literal-array",
        AgnosticBackend::Indexable::FieldType::DATE => "date",
        AgnosticBackend::Indexable::FieldType::DATE_ARRAY=> "date-array",