extensions/markdown-language-features/src/commands/openDocumentLink.ts/OpenDocumentLinkCommand/getViewColumn
class OpenDocumentLinkCommand:	private static getViewColumn(resource: vscode.Uri): vscode.ViewColumn {
		const config = vscode.workspace.getConfiguration('markdown', resource);
		const openLinks = config.get<OpenMarkdownLinks>('links.openLocation', OpenMarkdownLinks.currentGroup);
		switch (openLinks) {
			case OpenMarkdownLinks.beside:
				return vscode.ViewColumn.Beside;
			case OpenMarkdownLinks.currentGroup:
			default:
				return vscode.ViewColumn.Active;
		}
	}