Bug 76363 NPE in AdvancedQuickAssistProcessor.getFullyCoveredNodes
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/correction/AdvancedQuickAssistProcessor.java
outerIfStatement.setThenStatement(outerBlock);
		ASTNode ifPlaceholder = rewrite.createMoveTarget(ifStatement);
		outerBlock.statements().add(ifPlaceholder);
		
		rewrite.replace(ifStatement, outerIfStatement, null);
		
		String label = CorrectionMessages.getString("AdvancedQuickAssistProcessor.splitAndCondition.description"); 
		Image image = JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_LOCAL);
		ASTRewriteCorrectionProposal proposal = new ASTRewriteCorrectionProposal(label, context.getCompilationUnit(),
				rewrite, 1, image);
		resultingCollections.add(proposal);
		return true;
	}
	private static boolean getJoinOrIfStatementsProposals(IInvocationContext context, ASTNode covering, ArrayList coveredNodes,
			Collection resultingCollections) {
		Operator orOperator = InfixExpression.Operator.CONDITIONAL_OR;
		if (coveredNodes.size() < 2)
			return false;
		
		String commonThenSource = null;
		for (Iterator I = coveredNodes.iterator(); I.hasNext();) {
			ASTNode node = (ASTNode) I.next();
			if (!(node instanceof IfStatement))
				return false;
			
			IfStatement ifStatement = (IfStatement) node;
			if (ifStatement.getElseStatement() != null)
				return false;
			
			Statement thenStatement = ifStatement.getThenStatement();