def make_list(self, item):
        self.setSortingEnabled(False)
        if not (hasattr(item, 'tag_to_item') or hasattr(item, 'mshp_to_item')): 
            return
        for wf in item.tag_to_item.itervalues():
            index = wf.parent().indexOfChild(wf)
            wf = wf.parent().takeChild(index)
            item.workflowsItem.addChild(wf)
        self.updateHideExecutions()
        self.setSortingEnabled(True)
construct a list from the tagged workflows in a loaded vistrail
dataset/ETHPy150Open VisTrails/VisTrails/vistrails/gui/collection/workspace.py/QVistrailList.make_list