Rule Context and Processor

ContentEditorRuleContext.cs

[Serializable]
public class ContentEditorRuleContext : RuleContext, ISerializable
{
    public List<IMappedItem> MappedItems { get; set; } = new List<IMappedItem>();
    public void GetObjectData(SerializationInfo info, StreamingContext context)
    {
    }
}

ContentEditorRulesProcessor.cs

public class ContentEditorRulesProcessor
{
    private Item item { get; set; }
    public List<IMappedItem> MappedItems { get; set; } = new List<IMappedItem>();
    public ContentEditorRulesProcessor(Item currentItem)
    {
        item = currentItem;
        if (item == null || !item.Paths.IsContentItem) return;
        ProcessRules();
    }
    private void ProcessRules()
    {
        var ruleContext = new ContentEditorRuleContext { Item = item };

        // Get the Rules Folder
        var rulesFolder = Factory.GetDatabase(RulesConstants.MasterDb).GetItem(RulesConstants.CeRulesFolder);
        if (rulesFolder == null) return;
        var rules = RuleFactory.GetRules<ContentEditorRuleContext>(rulesFolder, "Rule");
        rules.Run(ruleContext);
        // Set the MappedItems to the ruleContext.MappedItems which are a collection of items gathered from the Actions
        MappedItems = ruleContext.MappedItems;
        ruleContext.Abort();
    }
}

RulesConstants.cs

public struct RulesConstants
{
    public const string MasterDb = "master";
    public const string CeRulesFolder = "{55F26A63-D476-498F-817B-2FCDE203DB8A}";
}