Return JSON from a dotCMS widget

widget.vtl

#set($widgetJson={})

#set($conlist=[])
#foreach($con in $dotContentMap.startingUp)
    #set($conMap={})
    #set($dummy = $conMap.put("title", $con.title))
    #set($dummy = $conMap.put("urlTitle", $con.urlTitle))
    #set($dummy = $conlist.add($conMap))
#end
#set($dummy = $widgetJson.put("startingUp", $conlist))
$!dotJSON.put("widgetJson", $widgetJson)