def METHOD_NAME(self, index):
    """get the nth child of an item"""
    curItem = self.workspace
    path = self._getChildName(curItem, index[0])
    #walk down children
    for i in range(len(index) - 1):
        curItem = self._getChild(curItem,index[i])
        path += self._getChildPathPart(curItem, index[i+1])    
    return path