Bug 82089 Preview for whitespace before/after question mark should show unbound wildcard [formatter]
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/formatter/WhiteSpaceOptions.java
private static InnerNode createClassTree(Map workingValues, InnerNode parent) {
        final InnerNode root= new InnerNode(parent, workingValues, "WhiteSpaceTabPage.classes"); 
        createOption(root, workingValues, "WhiteSpaceTabPage.classes.before_opening_brace_of_a_class", DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_OPENING_BRACE_IN_TYPE_DECLARATION, CLASS_DECL_PREVIEW); 
        createOption(root, workingValues, "WhiteSpaceTabPage.classes.before_opening_brace_of_anon_class", DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_OPENING_BRACE_IN_ANONYMOUS_TYPE_DECLARATION, ANON_CLASS_PREVIEW); 
        createOption(root, workingValues, "WhiteSpaceTabPage.classes.before_comma_implements", DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_COMMA_IN_SUPERINTERFACES, CLASS_DECL_PREVIEW); 
        createOption(root, workingValues, "WhiteSpaceTabPage.classes.after_comma_implements", DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_AFTER_COMMA_IN_SUPERINTERFACES, CLASS_DECL_PREVIEW); 
        
        return root;
    }
    
    private static InnerNode createAssignmentTree(Map workingValues, InnerNode parent) {
        final InnerNode root= new InnerNode(parent, workingValues, "WhiteSpaceTabPage.assignments"); 
        createOption(root, workingValues, "WhiteSpaceTabPage.assignments.before_assignment_operator", DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_ASSIGNMENT_OPERATOR, OPERATOR_PREVIEW); 
        createOption(root, workingValues, "WhiteSpaceTabPage.assignments.after_assignment_operator", DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_AFTER_ASSIGNMENT_OPERATOR, OPERATOR_PREVIEW); 
        return root;
    }
    
    private static InnerNode createOperatorTree(Map workingValues, InnerNode parent) {
        final InnerNode root= new InnerNode(parent, workingValues, "WhiteSpaceTabPage.operators"); 
        
        createOption(root, workingValues, "WhiteSpaceTabPage.operators.before_binary_operators", DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_BINARY_OPERATOR, OPERATOR_PREVIEW); 
        createOption(root, workingValues, "WhiteSpaceTabPage.operators.after_binary_operators", DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_AFTER_BINARY_OPERATOR, OPERATOR_PREVIEW); 
        createOption(root, workingValues, "WhiteSpaceTabPage.operators.before_unary_operators", DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_UNARY_OPERATOR, OPERATOR_PREVIEW); 
        createOption(root, workingValues, "WhiteSpaceTabPage.operators.after_unary_operators", DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_AFTER_UNARY_OPERATOR, OPERATOR_PREVIEW); 
        createOption(root, workingValues, "WhiteSpaceTabPage.operators.before_prefix_operators", DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_PREFIX_OPERATOR, OPERATOR_PREVIEW); 
        createOption(root, workingValues, "WhiteSpaceTabPage.operators.after_prefix_operators", DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_AFTER_PREFIX_OPERATOR, OPERATOR_PREVIEW); 
        createOption(root, workingValues, "WhiteSpaceTabPage.operators.before_postfix_operators", DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_POSTFIX_OPERATOR, OPERATOR_PREVIEW); 
        createOption(root, workingValues, "WhiteSpaceTabPage.operators.after_postfix_operators", DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_AFTER_POSTFIX_OPERATOR, OPERATOR_PREVIEW); 
        return root;