Excel JavaScript API：查找父对象

So I’m working my way through this very under-developed JavaScript API in an Office App, and I’m trying to figure out how to get an objects parent. Specifically, how to get a worksheet from a range, or a worksheet from a table, but could also be a worksheet from a chart, workbook from a worksheet, etc. I have yet to find any sample code which does this. Appreciate any help!So I’m working my way through this very under-d