presto-rcfile/src/main/java/io/prestosql/rcfile/RcFileReader.java/RcFileReader/readLengthPrefixedString
class RcFileReader:    private Slice readLengthPrefixedString(SliceInput in)
            throws RcFileCorruptionException
    {
        int length = toIntExact(readVInt(in));
        verify(length <= MAX_METADATA_STRING_LENGTH, "Metadata string value is too long (%s) in RCFile %s", length, in);
        return in.readSlice(length);
    }