fLinkedProposalPositions= null;
	public CUCorrectionProposal(String name, ICompilationUnit cu, TextChange change, int relevance, Image image) {		super(name, change, relevance, image);		if (cu == null) {			throw new IllegalArgumentException("Compilation unit must not be null"); //$NON-NLS-1$		}		fCompilationUnit= cu;	}