public @interface Mutable
This annotation type is used to indicate that instances of the associated
class may be altered after they have been created.
It will only be used for classes which are primarily used as data structures
and will not be included in classes whose primary purpose is something other
than as a data type. It will also not be used for interfaces, abstract
classes, or enums.
This annotation type will appear in the generated Javadoc documentation for
classes and interfaces that include it.