private function _extractMessage(\Twig_Node $node)
	{
		if ($node->hasNode('node')) {
			return $this->_extractMessage($node->getNode('node'));
		}
		if ($node instanceof \Twig_Node_Expression_Constant) {
			return $node->getAttribute('value');
		}
		
		return null;
	}
private function _extractMessage(\Twig_Node $node)
	{
		if ($node->hasNode('node')) {
			return $this->_extractMessage($node->getNode('node'));
		}
		if ($node instanceof \Twig_Node_Expression_Constant) {
			return $node->getAttribute('value');
		}
		
		return null;
	}
private function _extractMessage ( \ Twig_Node $ node ) { if ( $ node -> hasNode ( 'node' ) ) { return $ this -> _extractMessage ( $ node -> getNode ( 'node' ) ) ; } if ( $ node instanceof \ Twig_Node_Expression_Constant ) { return $ node -> getAttribute ( 'value' ) ; } return null ; }
Extract a message from a \Twig_Node_Print
Return null if not a constant message

@param \Twig_Node $node
Extract a message from a \ Twig_Node_Print Return null if not a constant message