XRLog.exception( "Trying to set more than one pseudo-element" );
XRLog.match(Level.WARNING, "Trying to set more than one pseudo-element");
    public void setPseudoElement( String pseudoElement ) {        if ( _pe != null ) {            addUnsupportedCondition();            XRLog.exception( "Trying to set more than one pseudo-element" );        } else {            _specificityD++;            _pe = pseudoElement;        }    }