extensions/microsoft-authentication/src/AADHelper.ts/AzureActiveDirectoryService/constructor
class AzureActiveDirectoryService:	constructor(private _context: vscode.ExtensionContext) {
		this._keychain = new Keychain(_context);
		this._uriHandler = new UriEventHandler();
		this._disposables.push(vscode.window.registerUriHandler(this._uriHandler));
	}