category = 'PartsBin/Presenting'
partsSpace = lively.PartsBin.partsSpaceNamed(category)
partsSpace.load()
partItems = partsSpace.getPartItems()
partItems.forEachShowingProgress(
    this.get('ProgressBar'),
    function(partItem) {
        var part = partItem.loadPart().part,
            serialized = partItem.serializePart(part)
        new WebResource(partItem.getHTMLLogoURL()).put(serialized.htmlLogo);
    },
    function(partItem) { return partItem.name },
    function(partItem) { alertOK('Done') })