<PackageReference Include="Relativity.Server.Utility.SDK" Version="14.2.7" />

kCura.Utility.MassAssign.MassExtensions

public sealed class MassExtensions
Defines an extension that is capable of automatically copying properties from one object to another.
public static void MassAssign(ICanMassAssign target, ICanMassAssign source)

Mass assign (copy) properties that have matching names and have been marked as assignable from the source object to the target.