Use anonymous function for parsing steps

Author: Tobias Wojtylak

src/Context/FlowContext.php

@@ -37,7 +37,7 @@ public function getNextStep(): ?MultiStepInterface
         do {
             $nextStep = $this->flow->getStepAfter($currentStep);
             $currentStep = $nextStep;
-        } while (null !== $nextStep && $nextStep->getStepRequiredChecker()->check() === false);
+        } while (null !== $nextStep && false === $nextStep->getStepRequiredChecker()->check());
 
         return $nextStep;
     }
@@ -48,7 +48,7 @@ public function getPreviousStep(): ?MultiStepInterface
         do {
             $previousStep = $this->flow->getStepBefore($currentStep);
             $currentStep = $previousStep;
-        } while (null !== $previousStep && $previousStep->getStepRequiredChecker()->check() === false);
+        } while (null !== $previousStep && false === $previousStep->getStepRequiredChecker()->check());
 
         return $previousStep;
     }

src/DependencyInjection/MultiStepExtension.php

@@ -40,22 +40,13 @@ private function parseFlows(array $flowsArray, ContainerBuilder $container): voi
     {
         $registryDefinition = $container->getDefinition('sd.multistep.flow_registry');
         foreach ($flowsArray as $id => $flowConfig) {
-            $flowConfig['steps'] = array_map([$this, 'getStepOption'], $flowConfig['steps']);
+            $flowConfig['steps'] = array_map(function (array $options): array {
+                if (isset($options['stepRequiredChecker'])) {
+                    $options['stepRequiredChecker'] = new Reference($options['stepRequiredChecker']);
+                }
+                return $options;
+            }, $flowConfig['steps']);
             $registryDefinition->addMethodCall('addByConfig', [$id, $flowConfig]);
         }
     }
-
-    /**
-     * @param string[] $stepConfig
-     *
-     * @return string[]
-     */
-    private function getStepOption(array $stepConfig): array
-    {
-        $options = $stepConfig;
-        if (isset($options['stepRequiredChecker'])) {
-            $options['stepRequiredChecker'] = new Reference($options['stepRequiredChecker']);
-        }
-        return $options;
-    }
 }