src/Api/ApigeeX/Normalizer/AcceptedRatePlanNormalizer.php:25:7: MethodSignatureMismatch: Method Apigee\Edge\Api\ApigeeX\Normalizer\AcceptedRatePlanNormalizer::normalize with return type '' is different to return type 'ArrayObject|array<array-key, mixed>|null|scalar' of inherited method Symfony\Component\Serializer\Normalizer\NormalizerInterface::normalize (see https://psalm.dev/042)

src/Api/ApigeeX/Normalizer/AcceptedRatePlanNormalizer.php:25:7: MethodSignatureMismatch: Method Apigee\Edge\Api\ApigeeX\Normalizer\AcceptedRatePlanNormalizer::supportsNormalization with return type '' is different to return type 'bool' of inherited method Symfony\Component\Serializer\Normalizer\NormalizerInterface::supportsNormalization (see https://psalm.dev/042)

src/Api/ApigeeX/Normalizer/ApiProductNormalizer.php:29:7: MethodSignatureMismatch: Method Apigee\Edge\Api\ApigeeX\Normalizer\ApiProductNormalizer::normalize with return type '' is different to return type 'ArrayObject|array<array-key, mixed>|null|scalar' of inherited method Symfony\Component\Serializer\Normalizer\NormalizerInterface::normalize (see https://psalm.dev/042)

src/Api/ApigeeX/Normalizer/ApiProductNormalizer.php:29:7: MethodSignatureMismatch: Method Apigee\Edge\Api\ApigeeX\Normalizer\ApiProductNormalizer::supportsNormalization with return type '' is different to return type 'bool' of inherited method Symfony\Component\Serializer\Normalizer\NormalizerInterface::supportsNormalization (see https://psalm.dev/042)

src/Api/ApigeeX/Normalizer/AppGroupMembershipNormalizer.php:24:7: MethodSignatureMismatch: Method Apigee\Edge\Api\ApigeeX\Normalizer\AppGroupMembershipNormalizer::normalize with return type '' is different to return type 'ArrayObject|array<array-key, mixed>|null|scalar' of inherited method Symfony\Component\Serializer\Normalizer\NormalizerInterface::normalize (see https://psalm.dev/042)

src/Api/ApigeeX/Normalizer/AppGroupMembershipNormalizer.php:24:7: MethodSignatureMismatch: Method Apigee\Edge\Api\ApigeeX\Normalizer\AppGroupMembershipNormalizer::supportsNormalization with return type '' is different to return type 'bool' of inherited method Symfony\Component\Serializer\Normalizer\NormalizerInterface::supportsNormalization (see https://psalm.dev/042)

src/Api/ApigeeX/Normalizer/AppGroupMembershipNormalizer.php:24:7: UnimplementedInterfaceMethod: Method getsupportedtypes is not defined on class Apigee\Edge\Api\ApigeeX\Normalizer\AppGroupMembershipNormalizer (see https://psalm.dev/044)

src/Api/ApigeeX/Normalizer/AppNormalizer.php:28:7: MethodSignatureMismatch: Method Apigee\Edge\Api\ApigeeX\Normalizer\AppNormalizer::normalize with return type '' is different to return type 'ArrayObject|array<array-key, mixed>|null|scalar' of inherited method Symfony\Component\Serializer\Normalizer\NormalizerInterface::normalize (see https://psalm.dev/042)

src/Api/ApigeeX/Normalizer/AppNormalizer.php:28:7: MethodSignatureMismatch: Method Apigee\Edge\Api\ApigeeX\Normalizer\AppNormalizer::supportsNormalization with return type '' is different to return type 'bool' of inherited method Symfony\Component\Serializer\Normalizer\NormalizerInterface::supportsNormalization (see https://psalm.dev/042)