supportedDatatypes.put(Base64BinaryAttribute.identifier, new Base64BinaryAttributeProxy());
supportedDatatypes.put(X500NameAttribute.identifier, new X500NameAttributeProxy());
supportedDatatypes.put(RFC822NameAttribute.identifier, new RFC822NameAttributeProxy());
// the 2.0 datatypes
supportedDatatypes.put(DNSNameAttribute.identifier, new DNSNameAttributeProxy());
supportedDatatypes.put(IPAddressAttribute.identifier, new IPAddressAttributeProxy());
}