code: private void manageExceptions(final String method_name) throws DevFailed {
  	if (attrval.err_list != null) {
  	    if (attrval.err_list.length > 0) {
  		throw new WrongData(attrval.err_list);
  	    }
  	}
  	if (attrval.quality == AttrQuality.ATTR_INVALID) {
  	    Except.throw_wrong_data_exception("AttrQuality_ATTR_INVALID",
  		    "Attribute quality factor is INVALID", "DeviceAttribute."
  			    + method_name + "()");
  	}
      }
docs: ===========================================