code: public void setIgnoreEMail(String serverName, String ignoreEMail) {
          if (serverName != null) {
              if (ignoreEMail != null) {
                  ignoreEMails.put(serverName, ignoreEMail);
              } else {
                  ignoreEMails.remove(serverName);
              }
          }
      }
docs: Standard setter for the ignoreEMail.
  
  @param serverName the server name.
  @param ignoreEMail the e-mail address to ignore CommentAdded events from.
  If you want to remove, please set null.