displayType = props.getProperty(prefix + DisplayTypeProperty); attributeColName = props.getProperty(prefix + AttributeProperty);
setDisplayType(props.getProperty(prefix + DisplayTypeProperty)); attributeColName = props.getProperty(prefix + AttributeProperty, attributeColName);
    public void setProperties(String prefix, Properties props) {        super.setProperties(prefix, props);        if (props == null) {            return;        }        prefix = PropUtils.getScopedPropertyPrefix(prefix);        displayType = props.getProperty(prefix + DisplayTypeProperty);        attributeColName = props.getProperty(prefix + AttributeProperty);    }