Mutate the LogSeverity on a LogMessage object

LogMutator.cs

using System.Reflection;
using Discord;

namespace DiscordBot
{
    public class LogMutator
    {
        private readonly FieldInfo _sevField;

        public LogMutator()
        {
            _sevField = typeof(LogMessage).GetField($"{nameof(LogMessage.Severity)}k__BackingField");
        }

        public LogMessage Mutate(LogMessage message, LogSeverity severity)
        {
            _sevField.SetValue(message, severity);
        }
    }
}