original_string: function reverse ($preserveKeys = false)
    {
      $this->pack ();
      $this->it = $this->array_reverse_iterator ($this->data, $preserveKeys);
      unset ($this->data);
      return $this;
    }
code: function reverse ($preserveKeys = false)
    {
      $this->pack ();
      $this->it = $this->array_reverse_iterator ($this->data, $preserveKeys);
      unset ($this->data);
      return $this;
    }
code_tokens: function reverse ( $ preserveKeys = false ) { $ this -> pack ( ) ; $ this -> it = $ this -> array_reverse_iterator ( $ this -> data , $ preserveKeys ) ; unset ( $ this -> data ) ; return $ this ; }
docstring: Reverses the order of iteration.
  
  Note: this method materializes the data.
  
  @param bool $preserveKeys If set to `true` numeric keys are preserved. Non-numeric keys are not affected by this
  setting and will always be preserved.
  @return $this
docstring_tokens: Reverses the order of iteration .