Bug 89013 Changes to ResultCollector --> API
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/text/java/ResultCollector.java
}
	
	/**
	 * @inheritDoc
	 * 
	 * Subclasses may extend, but must call the super implementation.
	 */
	public void completionFailure(IProblem problem) {
		fLastProblem= problem;
	}
	
	/**
	 * @inheritDoc
	 * 
	 * Subclasses may extend, but must call the super implementation.
	 */
	public void endReporting() {
		if (DEBUG) {
			long total= System.currentTimeMillis() - fStartTime;
			System.err.println("Code Assist (core): " + (total - fUITime)); 
			System.err.println("Code Assist (UI): " + fUITime); 
		}
		fContext= null;
	}
	
	/**
	 * Returns an error message about any error that may have occurred during
	 * code completion, or the empty string if none.
	 * <p>
	 * Subclasses may replace or extend.