The API for implementers of Java constraints on the `org.eclipse.emf.validation.constraintProviders` extension point.

## Package Specification

This package contains the classes that define the contract of constraints implemented in Java for validation of EMF models.

Java-language constraint implementations should subclass the {@link org.eclipse.emf.validation.AbstractModelConstraint} class in this package.

@see org.eclipse.emf.validation.AbstractModelConstraint @see

`org.eclipse.emf.validation.constraintProviders` extension point