Bug 114544 [clean up] clean up does not convert static accesses as promised
org.eclipse.jdt.ui.tests/ui/org/eclipse/jdt/ui/tests/quickfix/CleanUpTest.java
Preferences corePrefs= JavaCore.getPlugin().getPluginPreferences();
		corePrefs.setValue(JavaCore.CODEASSIST_FIELD_PREFIXES, "");
		corePrefs.setValue(JavaCore.CODEASSIST_STATIC_FIELD_PREFIXES, "");
		corePrefs.setValue(JavaCore.CODEASSIST_FIELD_SUFFIXES, "");
		corePrefs.setValue(JavaCore.CODEASSIST_STATIC_FIELD_SUFFIXES, "");		
		
		fJProject1= ProjectTestSetup.getProject();
		fSourceFolder= JavaProjectHelper.addSourceContainer(fJProject1, "src");
	}
	protected void tearDown() throws Exception {
		JavaProjectHelper.clear(fJProject1, ProjectTestSetup.getDefaultClasspath());
	}
	
	protected static void assertNumberOfChanges(CompilationUnitChange[] changes, int expectedChanges) {
		if (changes.length != expectedChanges) {
			StringBuffer buf= new StringBuffer();
			buf.append("Wrong number of changes, is: ").append(changes.length). append(", expected: ").append(expectedChanges).append('\n');
			for (int i= 0; i < changes.length; i++) {
				CompilationUnitChange curr= changes[i];
				buf.append(" - ").append(curr.getName()).append(" in ").append(curr.getCompilationUnit().getElementName()).append('\n');
			}
			assertTrue(buf.toString(), false);
		}
	}
	
	public static void assertNumberOfProblems(CompilationUnit unit, int expected) {
		IProblem[] problems= unit.getProblems();
		if (problems.length != expected) {
			StringBuffer buf= new StringBuffer();
			buf.append("Wrong number of problems, is: ").append(problems.length). append(", expected: ").append(expected).append('\n');