code: func NewStreamFileBuilderForPath(path string) (*StreamFileBuilder, error) {
  	file, err := os.Create(path)
  	if err != nil {
  		return nil, err
  	}
  	return NewStreamFileBuilder(file), nil
  }
docs: // NewStreamFileBuilderForPath takes the name of an XLSX file and returns a builder for it.
  // The file will be created if it does not exist, or truncated if it does.