<PackageReference Include="Relativity.Server.Services.Interfaces.SDK" Version="5000.0.2" />

Relativity.Services.Objects.DataContracts.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.