For situations in which the
XmlConstraintProvider class
does not suffice (i.e., where a plug-in provides constraints dynamically,
rather than statically registered in XML), this is a useful class to extend
as it provides a partial implementation of the
IModelConstraintProvider interface.
Abstract superclass of all constraint implementations provided via the
constraintProviders extension point in the plug-in manifest XML
whose language is "Java".
This class provides an abstract implementation of an XML constraint descriptor
that is used to provide descriptions of a particular constraint from an
IConfigurationElement.
