code: func (b *Bundle) AddTemplateString(filename, soyfile string) *Bundle {
  	b.files = append(b.files, soyFile{filename, soyfile})
  	return b
  }
docs: // AddTemplateString adds the given template to the bundle. The name is only
  // used for error messages - it does not need to be provided nor does it need to
  // be a real filename.