expose symbolMaster.ID on importable symbol refference
Please indicate if this is not the correct place for this.

I was wondering how to get the following information via the API, and if this is on the roadmap.

For a plugin that I develop I am swapping symbols from one library to another library. Each library is identical to eachother except for some color variations and the document ID.

I am looking for a way to import a symbol from a library based on the symbolMaster.ID

With this I am already capable of getting all imprtable refferences from that library. 
https://developer.sketchapp.com/reference/api/#importable-object 
```
var document = require('sketch/dom').getSelectedDocument();
var Library = require('sketch/dom').Library;
var library = Library.getLibraryForDocumentAtPath('/path/to/my/library/library.sketch');
var symbolReferences = library.getImportableSymbolReferencesForDocument(document);
```
Although each refference has an this is not the same ID as the symbolMaster.ID 

Is there a way to get the symbolMaster.ID from the importable object withouth importing the whole symbol?
