private void validateFields() throws ProcessException {

		if (id == null || id.isEmpty()) {
			throw new ProcessException("id is not provided for element: cmd");
		}

		if (path == null || path.isEmpty()) {
			throw new ProcessException("path is not provided for element: cmd");
		}

		if (out == null || out.isEmpty()) {
			throw new ProcessException("out is not provided for element: cmd");
		}

	}