isPluginComposerValid example

foreach ($filesystemPlugins as $filesystemPlugin) {
                $pluginPath = $filesystemPlugin->getRealPath();

                try {
                    $package = $this->packageProvider->getPluginComposerPackage($pluginPath, $composerIO);
                } catch (PluginComposerJsonInvalidException $e) {
                    $errors->add($e);

                    continue;
                }

                if (!$this->isShopwarePluginType($package) || !$this->isPluginComposerValid($package)) {
                    $this->addError($pluginPath, $errors);

                    continue;
                }

                $pluginName = $this->getPluginNameFromPackage($package);

                $plugins[$pluginName] = (new PluginFromFileSystemStruct())->assign([
                    'baseClass' => $pluginName,
                    'path' => $filesystemPlugin->getPathname(),
                    'managedByComposer' => false,