original_string: public function MoveToPrevious()
  	{
  		if ( is_null( $this->domNode ) || $this->domNode instanceof \DOMAttr ) return false;
  
  		$previous = $this->domNode->previousSibling;
  		if ( is_null( $previous ) ) return false;
  
  		$this->domNode = $previous;
  		return true;
  
  	}
code: public function MoveToPrevious()
  	{
  		if ( is_null( $this->domNode ) || $this->domNode instanceof \DOMAttr ) return false;
  
  		$previous = $this->domNode->previousSibling;
  		if ( is_null( $previous ) ) return false;
  
  		$this->domNode = $previous;
  		return true;
  
  	}
code_tokens: public function MoveToPrevious ( ) { if ( is_null ( $ this -> domNode ) || $ this -> domNode instanceof \ DOMAttr ) return false ; $ previous = $ this -> domNode -> previousSibling ; if ( is_null ( $ previous ) ) return false ; $ this -> domNode = $ previous ; return true ; }
docstring: When overridden in a derived class, moves the XPathNavigator to the previous sibling node of the current node.
  
  @return bool	Returns true if the XPathNavigator is successful moving to the previous sibling node; otherwise,
  false if there is no previous sibling node or if the XPathNavigator is currently positioned on an
  attribute node. If false, the position of the XPathNavigator is unchanged.
docstring_tokens: When overridden in a derived class moves the XPathNavigator to the previous sibling node of the current node .