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19  
20  package org.apache.jsieve.commands;
21  
22  import org.apache.jsieve.Arguments;
23  import org.apache.jsieve.Block;
24  import org.apache.jsieve.SieveContext;
25  import org.apache.jsieve.exception.SieveException;
26  import org.apache.jsieve.mail.ActionKeep;
27  import org.apache.jsieve.mail.MailAdapter;
28  
29  /**
30   * Class Keep implements the Keep Command as defined in RFC 3028, section 4.4.
31   */
32  public class Keep extends AbstractActionCommand {
33  
34      /**
35       * Constructor for Keep.
36       */
37      public Keep() {
38          super();
39      }
40  
41      /**
42       * <p>
43       * Add an ActionKeep to the List of Actions to be performed.
44       * </p>
45       * <p>
46       * Also,
47       * 
48       * @see org.apache.jsieve.commands.AbstractCommand#executeBasic(MailAdapter,
49       *      Arguments, Block, SieveContext)
50       *      </p>
51       */
52      protected Object executeBasic(MailAdapter mail, Arguments arguments,
53              Block block, SieveContext context) throws SieveException {
54          mail.addAction(new ActionKeep());
55          return null;
56      }
57  
58  }