namespace System
{
    [ComVisible(true)]
    [DefaultMember("Chars")]
    public sealed class String : IEnumerable, IEnumerable<char>, ICloneable, IComparable, IComparable<string>, IConvertible, IEquatable<string>
    {
        [SecuritySafeCritical]
        public int IndexOfAny(char[] anyOf, int startIndex, int count);
    }
}