https://help.eclipse.org/latest/topic/org.eclipse.emf.compare.doc/help/developer/javadoc/org/eclipse/emf/compare/adapterfactory/context/IContextTester.html
IContextTester (EMF Compare API Specification)
declaration: package: org.eclipse.emf.compare.adapterfactory.context, interface: IContextTester
emfcompareapispecification