presto-main/src/main/java/io/prestosql/execution/buffer/SerializedPage.java/SerializedPage/toString
class SerializedPage:    @Override
    public String toString()
    {
        return toStringHelper(this)
                .add("positionCount", positionCount)
                .add("pageCodecMarkers", PageCodecMarker.toSummaryString(pageCodecMarkers))
                .add("sizeInBytes", slice.length())
                .add("uncompressedSizeInBytes", uncompressedSizeInBytes)
                .toString();
    }