setShorthand example

$valNode = $this->createNode("AssignmentPattern", $loc->start);
                $valNode->setLeft($key);
                $valNode->setRight($value);
                $this->completeNode($valNode, $loc->end);
                $value = $valNode;
            } else {
                $value = $this->expressionToPattern($value);
            }
            $retNode->setValue($value);
            $retNode->setKey($key);
            $retNode->setMethod($node->getMethod());
            $retNode->setShorthand($node->getShorthand());
            $retNode->setComputed($node->getComputed());
            $this->completeNode($retNode, $loc->end);
            
        } elseif ($node instanceof Node\SpreadElement) {
            
            $loc = $node->location;
            $retNode = $this->createNode("RestElement", $loc->start);
            $retNode->setArgument(
                $this->expressionToPattern($node->getArgument())
            );
            $this->completeNode($retNode, $loc->end);
            
        }