In #19554 we merged the contribution that @Korbeil made to document the new TypeInfo component.

After merging it, I have some questions about it:

(1) When/how do you use the feature to build types? We show examples like these:

use Symfony\Component\TypeInfo\Type;

Type::int();
Type::nullable(Type::string());
Type::generic(Type::object(Collection::class), Type::int());

I can't understand how would you use that in a real PHP application. Can anyone show a real example? Thanks!

(2) In the second example, we show how to do $typeResolver = TypeResolver::create(); to get type information from an existing PHP class. But, we don't show any PHP class, so the examples feel a bit abstract to me.

Would anyone please volunteer to provide a good PHP class example that matches those code examples? Thanks!

(3) This component also supports "raw string resolving", but it's lacking a good example of the PHP class with those PHPDoc contents and the needed code to get the type information. Thanks!