static applyUpdate(options, update) {
        let changed = false;
        for (const editorOption of editorOptionsRegistry) {
            if (update.hasOwnProperty(editorOption.name)) {
                const result = editorOption.applyUpdate(options[editorOption.name], update[editorOption.name]);
                options[editorOption.name] = result.newValue;
                changed = changed || result.didChange;
            }
        }
        return changed;
    }
Returns true if something changed.
Modifies `options`.