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@Property 
@Deprecated
public String getKeyword(){
	return getKeywords()[0];
}
public void setKeyword(String keyword) {
	setKeywords(new String[]{keyword, “”});
}
@Property 
@Deprecated
public String getSecondaryKeyword(){
	return getKeywords()[1];
}
public void setSecondaryKeyword(String keyword) { 
	setKeywords(new String[]{“”, keyword});
}

@Property 
public String[] getKeywords() {...}
public void setKeywords(String[] keywords) {...}

public static void upgradeContent(String fromVersion,
Node[] nodes) throws  
IncompatibeUpdateException {
	if (fromVersion.compareTo(“1.1”) != 0) {
		String msg = “This update requires 1.1. “;
		msg += “Current WCBPlugin version is “ + fromVersion;
		throw new IncompatibeUpdateException(msg);          
    } else {
		updateKeywords(nodes);
    }
}

public static void updateKeywords(Node[] nodes) {
	for (int i=0; i<nodes.length;i++) {
		String pKeyword = nodes[i].getProperty("keyword").getString();
		String sKeyword = nodes[i].getProperty("secondaryKeyword").getString();
		String[] keywords = new String[]{pKeyword, sKeyword};
		nodes[i].setProperty(“keywords”, keywords);
	}
	nodes[0].getSession().save();
}

@Property 
public String[] getKeywords() {...}
public void setKeywords(String[] keywords) {...}

public static void upgradeContent(String fromVersion, Node[] nodes) throws IncompatibeUpdateException {
	if (fromVersion.compareTo(“1.2”) != 0 {
		String msg = “This update requires 1.2. “;
		msg += “Current WCBPlugin version is “ + fromVersion;
		throw new IncompatibeUpdateException(msg);          
	}
}