extensions/markdown-language-features/src/languageFeatures/pathCompletions.ts/MdVsCodePathCompletionProvider/resolvePath
class MdVsCodePathCompletionProvider:	private resolvePath(root: vscode.Uri, ref: string): vscode.Uri | undefined {
		try {
			if (root.scheme === Schemes.file) {
				return vscode.Uri.file(resolve(dirname(root.fsPath), ref));
			} else {
				return root.with({
					path: resolve(dirname(root.path), ref),
				});
			}
		} catch {
			return undefined;
		}
	}