Bug 26501 Refactoring wizard brings the package explorer to flicker [refactoring]
20021114 1. In the Java perspective, package explorer visible. 2. Open FilterDescriptor (jdt.ui) select ID_PLUGIN (line 76). 3. From the context menu choose Refactoring -> Inline Constant 4. On the first page press next 5. Before the progress monitor is finished, the package view suddenly starts to flicker for about 1/2 sec. Why?
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/PreferenceConstants.java
* <code>REFACTOR_OK_SEVERITY</code>.
	 * </p>
	 * 
	 * @see #REFACTOR_FATAL_SEVERITY
	 * @see #REFACTOR_ERROR_SEVERITY
	 * @see #REFACTOR_WARNING_SEVERITY
	 * @see #REFACTOR_INFO_SEVERITY
	 * @see #REFACTOR_OK_SEVERITY
	 */
	public static final String REFACTOR_ERROR_PAGE_SEVERITY_THRESHOLD= "Refactoring.ErrorPage.severityThreshold"; 
	/**
	 * A string value used by the named preference <code>REFACTOR_ERROR_PAGE_SEVERITY_THRESHOLD</code>.
	 * 
	 * @see #REFACTOR_ERROR_PAGE_SEVERITY_THRESHOLD
	 */
	public static final String REFACTOR_FATAL_SEVERITY= "4"; 
	
	/**
	 * A string value used by the named preference <code>REFACTOR_ERROR_PAGE_SEVERITY_THRESHOLD</code>.
	 * 
	 * @see #REFACTOR_ERROR_PAGE_SEVERITY_THRESHOLD
	 */	
	public static final String REFACTOR_ERROR_SEVERITY= "3"; 
	/**
	 * A string value used by the named preference <code>REFACTOR_ERROR_PAGE_SEVERITY_THRESHOLD</code>.
	 * 
	 * @see #REFACTOR_ERROR_PAGE_SEVERITY_THRESHOLD
	 */
	public static final String REFACTOR_WARNING_SEVERITY= "2"; 
	/**