ASN1Writer writer = ASN1.getWriter(builder);
writer.writeStartSequence(OP_TYPE_MODIFY_RESPONSE);
writer.writeOctetString(dn);
writer.writeStartSequence();
writer.writeEndSequence();
writer.writeEndSequence();
ASN1Reader reader = ASN1.getReader(builder.toByteString());
LDAPReader.readProtocolOp(reader);
}