<PackageReference Include="Relativity.Server.Services.Interfaces.SDK" Version="13.6.1" />

Relativity.Services.Objects.DataContracts.RelativityObjectRef

Represents the minimal information needed to uniquely identify a RelativityObject.
public int ArtifactID { get; set; }

Gets or sets the Artifact ID of the RelativityObject.

public Guid? Guid { get; set; }

Gets or sets a GUID used to identify the RelativityObject.

Allows explicit conversions from a RelativityObjectValue to a RelativityObjectRef