getClassProps example

    if (!$this->validator) {
      return TRUE;
    }
    // Detect the props with a type class, and validate that the class exists.     $schema = $definition['props'] ?? NULL;
    if (!$schema) {
      if ($enforce_schemas) {
        throw new InvalidComponentException(sprintf('The component "%s" does not provide schema information. Schema definitions are mandatory for components declared in modules. For components declared in themes, schema definitions are only mandatory if the "enforce_prop_schemas" key is set to "true" in the theme info file.', $definition['id']));
      }
      return TRUE;
    }
    $classes_per_prop = $this->getClassProps($schema);
    $missing_class_errors = [];
    foreach ($classes_per_prop as $prop_name => $class_types) {
      // For each possible type, check if it is a class.       $missing_classes = array_filter($class_types, static fn(string $class) => !class_exists($class) && !interface_exists($class));
      $missing_class_errors = [
        ...$missing_class_errors,
        ...array_map(
          static fn(string $class) => sprintf('Unable to find class/interface "%s" specified in the prop "%s" for the component "%s".', $class, $prop_name, $definition['id']),
          $missing_classes
        ),
      ];
    }