in java/src/main/java/com/aliyun/darabonba/array/Client.java [59:69]
public static List<String> concat(List<String> raw, List<String> sep) {
if (null == raw || null == sep) {
throw new IllegalArgumentException("not a valid value for parameter");
}
List<String> tem = new ArrayList<String>();
for (String item : raw) {
tem.add(item);
}
tem.addAll(sep);
return tem;
}