Neos.ContentRepository/Classes/Domain/Model/Node.php
public function isTethered(): bool
    {
        $parent = $this->getParent();
        if ($parent === null) {
            return false;
        }
        if (array_key_exists($this->getName(), $parent->getNodeType()->getAutoCreatedChildNodes())) {
            return true;
        }

        return false;
    }
public function isTethered(): bool
    {
        $parent = $this->getParent();
        if ($parent === null) {
            return false;
        }
        if (array_key_exists($this->getName(), $parent->getNodeType()->getAutoCreatedChildNodes())) {
            return true;
        }

        return false;
    }
public function isTethered ( ) : bool { $ parent = $ this -> getParent ( ) ; if ( $ parent === null ) { return false ; } if ( array_key_exists ( $ this -> getName ( ) , $ parent -> getNodeType ( ) -> getAutoCreatedChildNodes ( ) ) ) { return true ; } return false ; }
Whether or not this node is tethered to its parent, fka auto created child node

@return bool
Whether or not this node is tethered to its parent fka auto created child node