kernel/classes/ezcontentobjecttreenode.php
public function className()
    {
        if ( $this->ClassName === null )
        {
            $object = $this->object();
            $class = $object->contentClass();
            $this->ClassName = $class->attribute( 'name' );
        }

        return $this->ClassName;
    }
public function className()
    {
        if ( $this->ClassName === null )
        {
            $object = $this->object();
            $class = $object->contentClass();
            $this->ClassName = $class->attribute( 'name' );
        }

        return $this->ClassName;
    }
public function className ( ) { if ( $ this -> ClassName === null ) { $ object = $ this -> object ( ) ; $ class = $ object -> contentClass ( ) ; $ this -> ClassName = $ class -> attribute ( 'name' ) ; } return $ this -> ClassName ; }
Returns the node's class name

@return string|null
Returns the node s class name