RobustToolbox/Robust.Client/GameObjects/IClientEntityManagerInternal.cs

using Robust.Shared.GameObjects;

namespace Robust.Client.GameObjects
{
    internal interface IClientEntityManagerInternal : IClientEntityManager
    {
        // These methods are used by the Game State Manager.

        EntityUid CreateEntity(string? prototypeName, EntityUid uid = default);

        void InitializeEntity(EntityUid entity);

        void StartEntity(EntityUid entity);
    }
}