LayoutRef public class LayoutRef : IHasArtifactID, IHasIdentifyingInformation, IHasGuid Represents a key or reference to a Layout object. Documentation public int ArtifactID { get; set; } Gets or sets the Artifact ID of a Layout object. public Guid? Guid { get; set; } Gets or sets a GUID used to identify a Layout object. public LayoutRef()