BenchmarkDotNet=v0.12.1, OS=Windows 10.0.19042
Intel Core i7-7500U CPU 2.70GHz (Kaby Lake), 1 CPU, 4 logical and 2 physical cores
.NET Core SDK=5.0.104
  [Host]     : .NET Core 5.0.5 (CoreCLR 5.0.521.16609, CoreFX 5.0.521.16609), X64 RyuJIT
  Job-ONVXJR : .NET Core 5.0.5 (CoreCLR 5.0.521.16609, CoreFX 5.0.521.16609), X64 RyuJIT

LaunchCount=50  RunStrategy=ColdStart  

Type typeToCreate = typeof(Headers);
object headers = Activator.CreateInstance(typeToCreate);

BenchmarkDotNet=v0.12.1, OS=Windows 10.0.19042
Intel Core i7-7500U CPU 2.70GHz (Kaby Lake), 1 CPU, 4 logical and 2 physical cores
.NET Core SDK=5.0.104
  [Host]     : .NET Core 5.0.5 (CoreCLR 5.0.521.16609, CoreFX 5.0.521.16609), X64 RyuJIT
  DefaultJob : .NET Core 5.0.5 (CoreCLR 5.0.521.16609, CoreFX 5.0.521.16609), X64 RyuJIT

ConstructorInfor ctor = typeToCreate.GetConstructor(System.Type.EmptyTypes);

ILGenerator il = createHeadersMethod.GetILGenerator();
il.Emit(OpCodes.Newobj, Ctor);
il.Emit(OpCodes.Ret);

Type typeToCreate = typeof(Headers);
ConstructorInfor ctor = typeToCreate.GetConstructor(System.Type.EmptyTypes);
object headers = ctor.Invoke(null);

Func<object> headersDelegate = createHeadersMethod.CreateDelegate(typeof(Func<object>));
object headers = headersDelegate();

Headers KafkaDynamicMethodHeaders()
{
  return new Headers();
}

BenchmarkDotNet=v0.12.1, OS=Windows 10.0.19042
Intel Core i7-7500U CPU 2.70GHz (Kaby Lake), 1 CPU, 4 logical and 2 physical cores
  [Host]     : .NET Framework 4.8 (4.8.4300.0), X64 RyuJIT
  DefaultJob : .NET Framework 4.8 (4.8.4300.0), X64 RyuJIT

IL_0000: newobj instance void Headers::.ctor()
IL_0005: ret

Type headersType = typeof(Headers);
DynamicMethod createHeadersMethod = new DynamicMethod(
    name: $"KafkaDynamicMethodHeaders",
    returnType: headersType,
    parametertypes: null,
    module: typeof(ConstructorBenchmarks).Module,
    skipVisibility: false);