presto-rcfile/src/main/java/io/prestosql/rcfile/text/StringEncoding.java/StringEncoding/StringEncoding
class StringEncoding:    public StringEncoding(Type type, Slice nullSequence, Byte escapeChar)
    {
        this.type = type;
        this.nullSequence = nullSequence;
        this.escapeByte = escapeChar;
    }