original_string: public static function locallang(string $extensionKey, string $fileName = 'locallang.xlf', string $prefix = 'LLL:EXT:', string $separator = ':'): string {
      $languageFolder = self::languageFolder($extensionKey, $prefix);
  
      return "${languageFolder}/${fileName}${separator}";
    }
code: public static function locallang(string $extensionKey, string $fileName = 'locallang.xlf', string $prefix = 'LLL:EXT:', string $separator = ':'): string {
      $languageFolder = self::languageFolder($extensionKey, $prefix);
  
      return "${languageFolder}/${fileName}${separator}";
    }
code_tokens: public static function locallang ( string $ extensionKey , string $ fileName = 'locallang.xlf' , string $ prefix = 'LLL:EXT:' , string $ separator = ':' ) : string { $ languageFolder = self :: languageFolder ( $ extensionKey , $ prefix ) ; return "${languageFolder}/${fileName}${separator}" ; }
docstring: Gets the locallang file from an extension key.
  
  @param string $extensionKey The extension key
  @param string $prefix The optional file name of the locallang file, defaults to `locallang.xlf`
  @param string $prefix The optional prefix, defaults to `LLL:EXT:`
  @param string $separator The optional separator, defaults to `:`
  @return string The locallang file
docstring_tokens: Gets the locallang file from an extension key .