Neos.ContentRepository/Classes/Domain/Model/AbstractNodeData.php
public function getPropertyNames()
    {
        if (is_object($this->contentObjectProxy)) {
            return ObjectAccess::getGettablePropertyNames($this->contentObjectProxy->getObject());
        }
        return array_keys($this->properties);
    }
public function getPropertyNames()
    {
        if (is_object($this->contentObjectProxy)) {
            return ObjectAccess::getGettablePropertyNames($this->contentObjectProxy->getObject());
        }
        return array_keys($this->properties);
    }
public function getPropertyNames ( ) { if ( is_object ( $ this -> contentObjectProxy ) ) { return ObjectAccess :: getGettablePropertyNames ( $ this -> contentObjectProxy -> getObject ( ) ) ; } return array_keys ( $ this -> properties ) ; }
Returns the names of all properties of this node.

@return array Property names
Returns the names of all properties of this node .