public function watch(Url $attribute)
    {
        $this->propertyNames[$attribute->getMetaModel()->getTableName()][$attribute->getColName()] = $attribute;
    }
public function watch(Url $attribute)
    {
        $this->propertyNames[$attribute->getMetaModel()->getTableName()][$attribute->getColName()] = $attribute;
    }
public function watch ( Url $ attribute ) { $ this -> propertyNames [ $ attribute -> getMetaModel ( ) -> getTableName ( ) ] [ $ attribute -> getColName ( ) ] = $ attribute ; }
Register an attribute

@param Url $attribute The attribute.

@return void
Register an attribute