Application programming interface for creating customized FTP file subsystems.

## Package Specification

The package provides support classes for creating customized FTP file subsystems.

The class FTPFileSubSystemConfiguration is the main factory for creating an FTP file subsystem. By deriving from it, extenders can create their customized FTP file subsystem configuration which can then be registered against their system types. A custom SubSystemConfigurationAdapter can be registered for UI-specific customizations. Possible customizations include:

- Changing the isCaseSensitive() method for system types that are not of UNIX style.
- Registering pre-defined filters through a filter pool manager.
- Wrapping the created FileServiceSubSystem or FTPService in a delegate for modifying operation of the Subsystem.