original_string: public function get(string $key = null)
      {
          $result = (null !== $key)
              ? $this->_config[$key] ?? null
              : $this->_config;
  
          return $result;
      }
code: public function get(string $key = null)
      {
          $result = (null !== $key)
              ? $this->_config[$key] ?? null
              : $this->_config;
  
          return $result;
      }
code_tokens: public function get ( string $ key = null ) { $ result = ( null !== $ key ) ? $ this -> _config [ $ key ] ?? null : $ this -> _config ; return $ result ; }
docstring: Get single parameter by name or null, or all available parameters
  
  @param   string|null $key
  @return  mixed
docstring_tokens: Get single parameter by name or null or all available parameters