CSSName cssName = new CSSName(propName);
CSSName cssName = new CSSName(propName, isPrimitive);
    private final static synchronized CSSName addProperty(String propName, boolean isPrimitive) {        if (ALL_PROPERTY_NAMES == null) {            ALL_PROPERTY_NAMES = new TreeMap();        }        if ( ALL_PRIMITIVE_PROPERTY_NAMES == null ) {            ALL_PRIMITIVE_PROPERTY_NAMES = new TreeMap();        }        CSSName cssName = new CSSName(propName);        ALL_PROPERTY_NAMES.put(propName, cssName);        if ( isPrimitive ) {            ALL_PRIMITIVE_PROPERTY_NAMES.put(propName, cssName);        }        return cssName;    }