kernel/classes/ezcontentobjecttreenode.php
public function classIsContainer()
    {
        if ( $this->ClassIsContainer === null )
        {
            $object = $this->object();
            $class = $object->contentClass();
            $this->ClassIsContainer = $class->attribute( 'is_container' );
        }
        return $this->ClassIsContainer;
    }
public function classIsContainer()
    {
        if ( $this->ClassIsContainer === null )
        {
            $object = $this->object();
            $class = $object->contentClass();
            $this->ClassIsContainer = $class->attribute( 'is_container' );
        }
        return $this->ClassIsContainer;
    }
public function classIsContainer ( ) { if ( $ this -> ClassIsContainer === null ) { $ object = $ this -> object ( ) ; $ class = $ object -> contentClass ( ) ; $ this -> ClassIsContainer = $ class -> attribute ( 'is_container' ) ; } return $ this -> ClassIsContainer ; }
Returns 1 if the node's class is a container class, 0 otherwise

@return int|null
Returns 1 if the node s class is a container class 0 otherwise