PXP::Extension - Extension model class (used only in the internal registry)
An extension is a new processing element that can be added to the framework. An extension is typically bundled inside a Plugin with other Extensions.
This class is used only in the internal registry to store definitions of Extensions. Plugin developers MUST NOT use this class.
There are no rules or specific interfaces enforced by the framework. However, specific extension points may mandate the use of a specific interface for their own extensions. This choice is left to designers of new extension points.
Basic accessors for extension properties.
PXP::Plugin, PXP::PluginRegistry
See the article on eclipse.org describing the plugin architecture : http://www.eclipse.org/articles/Article-Plug-in-architecture/plugin_architecture.html
