Obj::getSetableKeys() 

\nn\t3::Obj()->getSetableKeys($obj); 

Get all keys of an object that have a SETTER. In contrast to \nn\t3::Obj()->getKeys(), only the property keys are are returned that can also be set, e.g. via setNameDerProp()

| @return array

public function getSetableKeys( $obj )
{
	$props = $this->getProps( $obj, null, true );
	return array_keys( $props );
}