original_string: public function appendExtension($name, array $config = [])
      {
          $merged = array_merge_recursive(
              $this->getExtension($name),
              $config
          );
  
          $this->addExtension($name, $merged);
      }
code: public function appendExtension($name, array $config = [])
      {
          $merged = array_merge_recursive(
              $this->getExtension($name),
              $config
          );
  
          $this->addExtension($name, $merged);
      }
code_tokens: public function appendExtension ( $ name , array $ config = [ ] ) { $ merged = array_merge_recursive ( $ this -> getExtension ( $ name ) , $ config ) ; $ this -> addExtension ( $ name , $ merged ) ; }
docstring: Merge with current extension configuration, appending new values to old ones.
  
  @param string $name
  @param array  $config
docstring_tokens: Merge with current extension configuration appending new values to old ones .