code: public Integer getExpirationCache()
     {
        if (childNode.getTextValueForPatternName("expiration-cache") != null && !childNode.getTextValueForPatternName("expiration-cache").equals("null")) {
           return Integer.valueOf(childNode.getTextValueForPatternName("expiration-cache"));
        }
        return null;
     }
docs: Returns the <code>expiration-cache</code> element
  @return the node defined for the element <code>expiration-cache</code>