Small snippet for reindexing an entity in Examine

Indexing.cs

public void ReIndexEntity(IContentBase entity)
{            
    if (entity is IContent)
    {
        ExamineManager.Instance.ReIndexNode((entity as IContent).ToXml(), "content");
    }
    else if (entity is IMedia)
    {
        ExamineManager.Instance.ReIndexNode((entity as IMedia).ToXml(), "media");
    }
}

// In newer versions of Umbraco 7, the ToXml() method has been declared Obsolete.
// The only thing ToXml() is doing is wrapping the PackagingService --> https://github.com/umbraco/Umbraco-CMS/blob/release-7.2.5/src/Umbraco.Core/Models/ContentExtensions.cs#L816
// So we can just use the Packaging service directly, or wrap it up in our helper method.
public void ReIndexEntityNew(IContentBase entity, IEnumerable<BaseIndexProvider> providers = null)
{
    var packagingService = ApplicationContext.Current.Services.PackagingService;
    XElement xml;
    string type;
    if (entity is IContent)
    {
        type = "content";
        xml = packagingService.Export((entity as IContent), false, false);                
    }
    else if (entity is IMedia)
    {
        type = "media";
        xml = packagingService.Export((entity as IMedia), false, false);                
    }
    else
    {
        type = "member";
        // Seems like there is a glitch in the interface :P
        // The IMember signature is only available on the concrete implementation of IPackagingService.
        xml = ((PackagingService)packagingService).Export((entity as IMember)); 
    }

    if (providers != null)
    {
        ExamineManager.Instance.ReIndexNode(xml, type, providers);
        return;
    }

    ExamineManager.Instance.ReIndexNode(xml, type);
}