Summary: @public
Since we added packager-managed assets -- internally we still think of asset dependency as a single "module". In reality there are multiple files that represent this module. This becomes important with the `getDependencies` API which is used by Buck to inform it on what to rebuild. Since `getDependencies` deals with modules, and is more of an internal API, I've introduced a new one and would go on to deprecate this.
Reviewed By: @frantic
Differential Revision: D2487207