refactor base smartproc

src/main/java/com/iconplus/smartproc/helper/model/EmptyResponse.java

@@ -0,0 +1,9 @@
+package com.iconplus.smartproc.helper.model;
+
+import brave.internal.Nullable;
+import com.iconplus.smartproc.helper.base.BaseResponse;
+
+@Nullable
+public class EmptyResponse extends BaseResponse {
+
+}