Is the LDAP SDK extensible?
The LDAP SDK does provide various forms of extensibility. In particular, it contains a number of non-final classes that may be extended to provide additional functionality. It is possible to define custom controls, extended requests and results, SASL mechanisms, matching rules, server sets, and command-line tools by extending classes provided by the LDAP SDK. Similarly, the LDAP SDK provides a number of interfaces that may be implemented by third-party code for various purposes, including notification of certain types of events or messages received from the server, establishing connections for following referrals, and transforming entries read from LDIF files. However, the LDAP SDK also includes a number of interfaces and non-final classes that are intended to be extended only by code within the LDAP SDK itself and not by third-party code outside of the LDAP SDK. To help developers distinguish which classes and interfaces may be extended by external code and which are only allowed for
