Directory Paths and REST API

According to the documentation:

 

To download the file, use the GET method and specify the /tm/asm/file-transfer/downloads endpoint, along with the name of the exported file. You must specify the name of the file in the request.

 

I have done this and I get:

 

File does not exist or file path is not a file: /ts/var/rest/restacct~localhost_2018-08-13_150134.ucs

 

Using the command line, I located the file, it is found in "/var/local/ucs". How do I specify a directory in the URL?

 

I tried: /tm/asm/file-transfer/downloads/var/local/ucs/localhost_2018-08-13_151831.ucs

 

That did not work. Produced the error:

 

URI path /tm/asm/file-transfer/downloads/var/local/ucs/localhost_2018-08-13_151831.ucs not registered.

 

Thanks!