Sealed method in C#

Question

I am a newbie in C#.I am reading about Sealed keyword.I have got about sealed class.I have read a line about Sealed method where we can make Sealed method also.The line was

Answer 1

C# has it because Java has an identical feature (final methods). I've never seen a legitimate use.

If you don't want to permit extension, the whole class should be marked sealed and not just one method.