docs: public ReferenceField getReferringField()
      {
      	ClearFieldReferenceOnCloseHandler listener = (ClearFieldReferenceOnCloseHandler)this.getListener(ClearFieldReferenceOnCloseHandler.class, true);
      	while (listener != null)
      	{
      	BaseField field = listener.getField();
      	if (field instanceof ReferenceField)
      		if (((ReferenceField)field).getReferenceRecord(null, false) == this)
      			return (ReferenceField)field;
      	}
      	return null;
      }