Imports are not included in the document symbols returned from "getDocumentSymbols" API

Hi

I am writing a vscode extension and I want to get the symbols of a JAVA file.

Environment
Operating System: windows 10
Visual Studio Code version: 1.50.0

Steps To Reproduce
If I run this sample code :

`const vscodeCDSExtension = extensions.getExtension("redhat.java");
const javaDocParams : DocumentSymbolParams = {
textDocument: {
uri: Uri.file(filePath).toString()
}
};

if (vscodeCDSExtension && vscodeCDSExtension.isActive) {
const symbols = await vscodeCDSExtension.exports.getDocumentSymbols(javaDocParams);
console.log(symbols.length);
}`

Current Result
The "imports" of the file are not included in the returned symbols (only "package", classes and methods are returned)

Expected Result
The "imports" also should be included in the result

The JAVA file is attached

CatalogServiceHandler.zip

Inizia riproducendo la chiamata API getDocumentSymbols dell’issue con il file Java allegato CatalogServiceHandler.zip. Traccia come vengono restituiti package, classi e metodi, quindi verifica che le dichiarazioni di importazione siano incluse nel risultato dei simboli e aggiungi o aggiorna la copertura se il repository fornisce un test corrispondente.