public function __isset($name)
    {
        $name = $this->convertToPrimaryKeyName($name);
        $meta = self::getMeta();

        return $meta->hasField($name);
    }
public function __isset($name)
    {
        $name = $this->convertToPrimaryKeyName($name);
        $meta = self::getMeta();

        return $meta->hasField($name);
    }
public function __isset ( $ name ) { $ name = $ this -> convertToPrimaryKeyName ( $ name ) ; $ meta = self :: getMeta ( ) ; return $ meta -> hasField ( $ name ) ; }
Checks if a property value is null.
This method overrides the parent implementation by checking if the named attribute is null or not.

@param string $name the property name or the event name

@return bool whether the property value is null
Checks if a property value is null . This method overrides the parent implementation by checking if the named attribute is null or not .