Specifies whether this method can be inherited in subclasses.
To specify that this method cannot be inherited in subclasses, use the following syntax:
Method name(formal_spec) As returnclass [ NotInheritable ]
Otherwise, omit this keyword or place the word Not
immediately before the keyword.
This keyword specifies that this method cannot be inherited in subclasses.
While having a member not be inheritable by its subclasses can be very useful in some cases, the keyword should be used rarely and judiciously, as it breaks the inheritance contract.
If you omit this keyword, this method is inheritable.