public function addTypeFilter($type)
    {
        $this->filter->eq('predicate', OntologyRdf::RDF_TYPE)
                     ->eq('object', $type);
        return $this;
    }
public function addTypeFilter($type)
    {
        $this->filter->eq('predicate', OntologyRdf::RDF_TYPE)
                     ->eq('object', $type);
        return $this;
    }
public function addTypeFilter ( $ type ) { $ this -> filter -> eq ( 'predicate' , OntologyRdf :: RDF_TYPE ) -> eq ( 'object' , $ type ) ; return $ this ; }
Add a type resource filter.

@param string $type
@return ResourceCollection
Add a type resource filter .