message: vscode.DocumentSymbol expects non-empty label
diff: @@ -27,7 +27,7 @@ export class DocSymbolProvider implements vscode.DocumentSymbolProvider {
  sections.forEach(section => {
  const range = new vscode.Range(section.lineNumber, 0, section.toLine, 65535)
  - const symbol = new vscode.DocumentSymbol(section.label, '', vscode.SymbolKind.String, range, range)
  + const symbol = new vscode.DocumentSymbol(section.label ? section.label : 'empty', '', vscode.SymbolKind.String, range, range)
  symbols.push(symbol)
  if (section.children.length > 0) {
  symbol.children = this.sectionToSymbols(section.children)
  