cn.hutool.core.collection.CollUtil#addAll(java.util.Collection<T>, java.lang.Iterable<T>) 判断空指针

hutool-core/src/main/java/cn/hutool/core/collection/CollUtil.java

@@ -2108,7 +2108,7 @@ public class CollUtil {
 	 * @return 原集合
 	 */
 	public static <T> Collection<T> addAll(Collection<T> collection, Iterable<T> iterable) {
-		if(iterable == null){
+		if (iterable == null) {
 			return collection;
 		}
 		return addAll(collection, iterable.iterator());