class DeleteOperation implements SingleOperation {

    @Override
    public boolean equals(final Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        final DeleteOperation that = (DeleteOperation) o;

        return entry.getKey().equals(that.getKey());
    }

    public  DeleteOperation(CacheEntry entry);
    public  DeleteOperation(CacheEntry entry, long creationTime);

}