public static String ToMemberwiseString(this IEnumerable list);
public static String ToMemberwiseString<T>(this IEnumerable<T> list);
public static String ToMemberwiseString<T>(this IEnumerable<T> list, String format) where T : IFormattable;
public static String ToMemberwiseString<T>(this IEnumerable<T> list, IFormatProvider formatProvider) where T : IFormattable;
public static String ToMemberwiseString<T>(this IEnumerable<T> list, String format, IFormatProvider formatProvider) where T : IFormattable;

ああ、よだれでそう、こりゃやるだろうな…ぜったいやるorz