Obsoleted method should be avoided, rather than overridden. Obsolescence is a warning that the method has been superseded, and will eventually be removed. The obsolescence period allows you to make a smooth transition away from the aging, soon-to-be-retired technology.
== Noncompliant Code Example
----
public class Car
{
[Obsolete("Replaced by the automatic starter")]
public void CrankEngine(int turnsOfCrank)
{ ... }
}
public class R2 : Car
{
public void CrankEngine(int turnsOfCrank) // Noncompliant