@Check
	public void checkNamesAreUnique(Composition composition){	
		EList<FrameworkContent> contents = new BasicEList<FrameworkContent>();
		for (Resource resource: composition.eResource().getResourceSet().getResources()) {
			for (EObject eobject: resource.getContents()){
				if (eobject.getClass().getName().contains("FrameworkImpl")){
					Framework tc = ((Framework) eobject);
					contents.addAll(tc.getContents());
				}
			}
		}
		if (contents.size()>1){
			for (FrameworkContent c: contents){
				if (c.getClass().equals(composition.getClass()) && (!c.equals(composition))){
					if (((Composition) c).getName().equals(composition.getName())){
						error("Duplicate name in scope: "+ composition.getName(),FrameworkPackage.Literals.COMPOSITION__NAME);
					}
				}
			}		
		}
	}