AppBuilder API - Preview Build?

[IlluminatedG]

Anyone familiar with programmatically previewing a build and getting a list of output files? The palette entries are only for build but we're moving to a PPL based architecture with additional PPLs already in place in the build output folders and I want to grab just the expected output files for the specific build. I've tooled around in the AppBuilder folders in vi.lib but don't see anything that clearly calls out how to generate a preview.

Thanks!

[IlluminatedG]

All of the examples show creating new build specs, but I want to link up to an existing build spec in a project regardless of the build type (exe, sourcedist, ppl, etc)