code: boolean documentFileOverview(String description) {
      setFlag(true, MASK_FILEOVERVIEW);
      if (!lazyInitDocumentation()) {
        return true;
      }
  
      if (documentation.fileOverview != null) {
        return false;
      }
  
      documentation.fileOverview = description;
      return true;
    }
docs: Documents the fileoverview comment/description.
  
  @param description the description