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11  *   http://www.apache.org/licenses/LICENSE-2.0
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20  *************************************************************/
21 
22 
23 
24 package share;
25 
26 public interface Watcher {
27 
28     /**
29      * pings the watcher to check for changes
30      */
ping()31     public void ping();
32 
33     /**
34      * returns the amount of pings
35      */
getPing()36     public int getPing();
37 
38 }
39