code: public void invokeListeners(final ValidationObject object, final String fieldName, final Object newValue, final Object currentValue) {
          m_validationEngine.invokeListeners(object, fieldName, newValue, currentValue, this);
  	}
docs: This is called after a successful setter call on one of the fields. If any listeners are attached to the field they are invoked
  from here.
  
  @param object
  @param fieldName
  @param newValue
  @param currentValue