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<K> type of the identifier of this cacheable object
Paul Ferraro
public interface Cacheable<K extends Serializableextends SerializableIdentifiable<K> {
Gets whether this object's internal state has been modified since the last request to this method.

Implementations must be aggressive about returning true if they are uncertain about whether they have been modified; false should only be returned if the implementing object is certain its internal state has not been modified.

true if the state has been modified or the implementing object does not know; false otherwise.
    boolean isModified();
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