@@ -53,6 +53,8 @@ namespace NLog.Config
         /// <remarks>Avoid calling this while handling a LogEvent, since random deadlocks can occur.</remarks>
         public abstract object GetService(Type serviceType);
 
+        internal abstract object TryGetService(Type serviceType);
+
         internal abstract ConfigurationItemCreator ConfigurationItemCreator { get; set; }
 
         internal ServiceRepository()
﻿// 
// Copyright (c) 2004-2021 Jaroslaw Kowalski <jaak@jkowalski.net>, Kim Christensen, Julian Verdurmen
// 
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namespace NLog.Config
{
    using System;

    /// <summary>
    /// Interface to register available configuration objects type
    /// </summary>
    public abstract class ServiceRepository : IServiceProvider
    {
        /// <summary>
        /// Registers instance of singleton object for use in NLog
        /// </summary>
        /// <param name="type">Type of service</param>
        /// <param name="instance">Instance of service</param>
        public abstract void RegisterService(Type type, object instance);

        /// <summary>
        /// Gets the service object of the specified type.
        /// </summary>
        /// <remarks>Avoid calling this while handling a LogEvent, since random deadlocks can occur.</remarks>
        public abstract object GetService(Type serviceType);

        internal abstract ConfigurationItemCreator ConfigurationItemCreator { get; set; }

        internal ServiceRepository()
        {
        }
    }
}

With A Try, I expected a bool resturn and a out param. Proposal: rename to FindService