Different Ways of Consuming Options

type-hinting-just-fine.php

<?php

Option::fromValue($this->scope->getTypeOfThis())
    ->flatMap(function(PhpType $type) { return $type->getObjectTypeMaybe(); })
    ->map(function(PhpType $type) {
        if ($type instanceof Clazz && $type->getSuperClassType() instanceof PhpType) {
            return $type->getSuperClassType();
        }

        return $this->typeRegistry->getNativeType('unknown');
    })
    ->forAll(function(PhpType $type) use ($node) {
        $node->setAttribute('type', $type);
    })
;

type-hinting-problem.php

<?php

$thisTypeMaybe = Option::fromValue($this->scope->getTypeOfThis());

if ($thisTypeMaybe->isDefined()) {
    $thisTypeMaybe = $thisTypeMaybe->get()->getObjectTypeMaybe();
    if ($thisTypeMaybe->isDefined()) {
        /** @var PhpType */
        $thisType = $thisTypeMaybe->get();
        
        if ($thisType instanceof Clazz && $thisType->getSuperClassType() instanceof PhpType) {
            $node->setAttribute('type', $thisType->getSuperClassType());
        } else {
            $node->setAttribute('type', $this->typeRegistry->getNativeType('unknown'));
        }
    }
}