private Object getIdString() {
		try {
			Field idField = this.getClass().getDeclaredField("id");
			return idField.get(this);
		} catch (SecurityException e) {
			return "";
		} catch (NoSuchFieldException e) {
			return "";
		} catch (IllegalArgumentException e) {
			return "";
		} catch (IllegalAccessException e) {
			return "";
		}
	}