public String expandOccurence(@NotNull DataContext context, @NotNull String occurence) throws ExecutionCancelledException {
    if (occurence.endsWith(")$")) {
      return expand(context, occurence.substring(occurence.indexOf('(') + 1, occurence.length() - 2));
    }
    return expand(context);
  }
public String expandOccurence(@NotNull DataContext context, @NotNull String occurence)