presto-raptor-legacy/src/main/java/io/prestosql/plugin/raptor/legacy/RaptorTableProperties.java/RaptorTableProperties/stringListSessionProperty
class RaptorTableProperties:    private static PropertyMetadata<?> stringListSessionProperty(TypeManager typeManager, String name, String description)
    {
        return new PropertyMetadata<>(
                name,
                description,
                typeManager.getParameterizedType(ARRAY, ImmutableList.of(TypeSignatureParameter.typeParameter(createUnboundedVarcharType().getTypeSignature()))),
                List.class,
                ImmutableList.of(),
                false,
                value -> ImmutableList.copyOf(stringList(value).stream()
                        .map(s -> s.toLowerCase(ENGLISH))
                        .collect(toList())),
                value -> value);
    }