Polishing

spring-context/src/main/java/org/springframework/context/annotation/ConfigurationClassParser.java

@@ -231,11 +231,7 @@ class ConfigurationClassParser {
 				// Explicit bean definition found, probably replacing an import.
 				// Let's remove the old one and go with the new one.
 				this.configurationClasses.remove(configClass);
-				for (Iterator<ConfigurationClass> it = this.knownSuperclasses.values().iterator(); it.hasNext();) {
-					if (configClass.equals(it.next())) {
-						it.remove();
-					}
-				}
+				this.knownSuperclasses.values().removeIf(configClass::equals);
 			}
 		}