com.unity.perception/com.unity.perception/Runtime/Randomization/Scenarios/ScenarioException.cs

using System;

namespace UnityEngine.Experimental.Perception.Randomization.Scenarios
{
    [Serializable]
    class ScenarioException : Exception
    {
        public ScenarioException(string message) : base(message) { }
        public ScenarioException(string message, Exception innerException) : base(message, innerException) { }
    }
}