[CodeGenerator] `to private`, `to public`, etc...

[SlavaRa]

Haxe

public<generator> function foo() {}

to private : function foo() {}

private<generator> function foo() {}
<generator> function foo() {}

to public : public function foo() {}

ActionScript

public<generator> function foo() {}

to private : private function foo() {}
to protected : protected function foo() {}
to internal : internal function foo() {}