Bug 67726 Refactoring fails if validate edit returns a cancel status [refactoring]
org.eclipse.ltk.core.refactoring/src/org/eclipse/ltk/core/refactoring/RefactoringStatus.java
public void addError(String msg) {
		addError(msg, null);
	}
	/**
	 * Adds an <code>ERROR</code> entry filled with the given message and context to 
	 * this status. If the current severity is <code>OK</code>, <code>INFO</code> or 
	 * <code>WARNING</code> it will be changed to <code>ERROR</code>. It will remain 
	 * unchanged otherwise.
	 * 
	 * @param msg the message of the error entry
	 * @param context the context of the error entry
	 * 
	 * @see RefactoringStatusEntry
	 */
	public void addError(String msg, RefactoringStatusContext context) {
		fEntries.add(new RefactoringStatusEntry(RefactoringStatus.ERROR, msg, context));
		fSeverity= Math.max(fSeverity, ERROR);
	}
	/**
	 * Adds a <code>FATAL</code> entry filled with the given message to this status.
	 * The severity of this status will changed to <code>FATAL</code>. 
	 * 
	 * @param msg the message of the fatal entry
	 * 
	 * @see RefactoringStatusEntry
	 */
	public void addFatalError(String msg) {
		addFatalError(msg, null);
	}
	/**