<PackageReference Include="Relativity.Server.ObjectManager.SDK" Version="5001.0.3" />

Relativity.ObjectManager.V1.Models.OperationOptions

public class OperationOptions
Represents information about how an operation for a request is being called.
public CallingContext CallingContext { get; set; }

Gets or sets information about the web context from which the event handler is being called, such as the layout or page mode.