ParamCollectionAttribute
Indicates that a method will allow a variable number of arguments in its invocation.
            
                using System.Diagnostics.CodeAnalysis;
namespace System.Runtime.CompilerServices
{
    [AttributeUsage(AttributeTargets.Parameter, Inherited = true, AllowMultiple = false)]
    [ExcludeFromCodeCoverage]
    internal sealed class ParamCollectionAttribute : Attribute
    {
    }
}