code: protected void propertySet(Bean bean, String propertyName, Object value, boolean quiet) {
          // used to enable 100% test coverage in beans
          if (quiet) {
              return;
          }
          throw new NoSuchElementException("Unknown property: " + propertyName);
      }
docs: Sets the value of the property.
  
  @param bean  the bean to update, not null
  @param propertyName  the property name, not null
  @param value  the value of the property, may be null
  @param quiet  true to take no action if unable to write
  @throws NoSuchElementException if the property name is invalid