CommonClassesStrategy::getPsr18Candidates(): array

65    private static function getPsr18Candidates()66    {67        $candidates = self::$classes[Psr18Client::class];68        // HTTPlug 2.0 clients implements PSR18Client too.69        foreach (self::$classes[HttpClient::class] as $c) {70            if (!is_string($c['class'])) {71                continue;72            }73            try {74                if (ClassDiscovery::safeClassExists($c['class']) && is_subclass_of($c['class'], Psr18Client::class)) {75                    $candidates[] = $c;76                }77            } catch (\Throwable $e) {78                trigger_error(sprintf('Got exception "%s (%s)" while checking if a PSR-18 Client is available', get_class($e), $e->getMessage()), \E_USER_WARNING);79            }80        }81        return $candidates;82    }