private int GetMemberRefToken(MethodBase methodInfo, Type[] optionalParameterTypes)
{
if (optionalParameterTypes != null && (methodInfo.CallingConvention & CallingConventions.VarArgs) == 0)
{
throw new InvalidOperationException(SR.InvalidOperation_NotAVarArgCallingConvention);
}
RuntimeMethodInfo rtMeth = methodInfo as RuntimeMethodInfo;
DynamicMethod dm = methodInfo as DynamicMethod;
if (rtMeth == null && dm == null)
{
throw new ArgumentException(SR.Argument_MustBeRuntimeMethodInfo, nameof(methodInfo));
}
SignatureHelper.ExtractParametersTypeArrays(
methodInfo.GetParametersNoCopy(),
out Type[] parameterTypes,
out Type[][] parameterTypeRequiredCustomModifiers,