interface NodeInterface

interface NodeInterface extends ContentEntityInterface, EntityChangedInterface, EntityOwnerInterface, RevisionLogInterface, EntityPublishedInterface {
    
    /**
     * Denotes that the node is not published.
     */
    const NOT_PUBLISHED = 0;
    
    /**
     * Denotes that the node is published.
     */
    const PUBLISHED = 1;
    
    /**
     * Denotes that the node is not promoted to the front page.
     */
    const NOT_PROMOTED = 0;
    
    /**
     * Denotes that the node is promoted to the front page.
     */
    const PROMOTED = 1;
    
    /**
     * Denotes that the node is not sticky at the top of the page.
     */
    const NOT_STICKY = 0;
    
    /**
     * Denotes that the node is sticky at the top of the page.
     */
    const STICKY = 1;
    
    /**
     * Gets the node type.
     *
     * @return string
     *   The node type.
     */
    public function getType();
    
    /**
     * Gets the node title.
     *
     * @return string|null
     *   Title of the node, or NULL if the node doesn't yet have a title (for
     *   example, if a new node is being previewed).
     */
    public function getTitle();
    
    /**
     * Sets the node title.
     *
     * @param string $title
     *   The node title.
     *
     * @return $this
     *   The called node entity.
     */
    public function setTitle($title);
    
    /**
     * Gets the node creation timestamp.
     *
     * @return int
     *   Creation timestamp of the node.
     */
    public function getCreatedTime();
    
    /**
     * Sets the node creation timestamp.
     *
     * @param int $timestamp
     *   The node creation timestamp.
     *
     * @return $this
     *   The called node entity.
     */
    public function setCreatedTime($timestamp);
    
    /**
     * Returns the node promotion status.
     *
     * @return bool
     *   TRUE if the node is promoted.
     */
    public function isPromoted();
    
    /**
     * Sets the node promoted status.
     *
     * @param bool $promoted
     *   TRUE to set this node to promoted, FALSE to set it to not promoted.
     *
     * @return $this
     *   The called node entity.
     */
    public function setPromoted($promoted);
    
    /**
     * Returns the node sticky status.
     *
     * @return bool
     *   TRUE if the node is sticky.
     */
    public function isSticky();
    
    /**
     * Sets the node sticky status.
     *
     * @param bool $sticky
     *   TRUE to set this node to sticky, FALSE to set it to not sticky.
     *
     * @return $this
     *   The called node entity.
     */
    public function setSticky($sticky);
    
    /**
     * Gets the node revision creation timestamp.
     *
     * @return int
     *   The UNIX timestamp of when this revision was created.
     */
    public function getRevisionCreationTime();
    
    /**
     * Sets the node revision creation timestamp.
     *
     * @param int $timestamp
     *   The UNIX timestamp of when this revision was created.
     *
     * @return $this
     *   The called node entity.
     */
    public function setRevisionCreationTime($timestamp);

}