Using some sample files in my own Dropbox as an example.
I have the following public shared link to the folder "sample":
https://www.dropbox.com/sh/rg57hqnbsiwhb7k/AACrOIpyLlihM_qdIweFEavTa
I know (but my application doesn't) that "sample" is a sub-folder of "Photos", which is also a shared folder with this link:
https://www.dropbox.com/sh/kppi5thjgozgnln/AADU_VtWsTHPtQH-rodcI6I6a
Given the first (subfolder) link, how can I use the API to obtain the second link, or shared folder ID, etc., for the parent folder?