[TOptional](API\Runtime\Core\IO\TOptional)< [FParseError](API\Plugins\CurveExpression\FParseError) > Verify ( FStringView InExpression, [TFunction](API\Runtime\Core\GenericPlatform\TFunction)< [TOptional](API\Runtime\Core\IO\TOptional)< float >([FName](API\Runtime\Core\UObject\FName) InConstantName)> InConstantEvaluator ) const