public boolean valueIsAcceptable(ByteSequence value,
MessageBuilder invalidReason) {
// Use the subtree specification code to make this determination.
// Try parsing the value with every subtree spec known.
SubtreeSpecification subTreeSpec = null;
String specString = value.toString();
try {
subTreeSpec = RFC3672SubtreeSpecification.valueOf(
DN.nullDN(), specString);
return true;