presto-thrift-api/src/main/java/io/prestosql/plugin/thrift/api/datatypes/PrestoThriftVarchar.java/PrestoThriftVarchar/getBytes
class PrestoThriftVarchar:    @Nullable
    @ThriftField(value = 3, requiredness = OPTIONAL)
    public byte[] getBytes()
    {
        return sliceType.getBytes();
    }