original_string: public function getFile($key)
      {
          $key = str_replace($this->illegalChars, '_', $this->namespace . $key);
          return $this->dir . '/' . $key . '.' . $this->ext;
      }
code: public function getFile($key)
      {
          $key = str_replace($this->illegalChars, '_', $this->namespace . $key);
          return $this->dir . '/' . $key . '.' . $this->ext;
      }
code_tokens: public function getFile ( $ key ) { $ key = str_replace ( $ this -> illegalChars , '_' , $ this -> namespace . $ key ) ; return $ this -> dir . '/' . $ key . '.' . $ this -> ext ; }
docstring: Get cache file by key
  
  @param  string $key
  @return string
docstring_tokens: Get cache file by key