presto-spi/src/main/java/io/prestosql/spi/type/RealType.java/RealType/getObjectValue
class RealType:    @Override
    public Object getObjectValue(ConnectorSession session, Block block, int position)
    {
        if (block.isNull(position)) {
            return null;
        }
        return intBitsToFloat(block.getInt(position, 0));
    }