presto-spi/src/main/java/io/prestosql/spi/type/TypeUtils.java/TypeUtils/readNativeValue
class TypeUtils:    public static Object readNativeValue(Type type, Block block, int position)
    {
        Class<?> javaType = type.getJavaType();

        if (block.isNull(position)) {
            return null;
        }
        if (javaType == long.class) {
            return type.getLong(block, position);
        }
        if (javaType == double.class) {
            return type.getDouble(block, position);
        }
        if (javaType == boolean.class) {
            return type.getBoolean(block, position);
        }
        if (javaType == Slice.class) {
            return type.getSlice(block, position);
        }
        return type.getObject(block, position);
    }