NCP-3 Update entity like helper.php

src/main/java/ru/soune/no_copy/entity/ContentStatus.java

@@ -1,5 +1,20 @@
 package ru.soune.no_copy.entity;
 
+import lombok.Getter;
+
+@Getter
 public enum ContentStatus {
-    PROCESSING, COMPLETED, ERROR
+    PROCESSING("processing"),
+    COMPLETED("completed"),
+    ERROR("error");
+
+    private final String code;
+
+    ContentStatus(String code) {
+        this.code = code;
+    }
+
+    public String getCode() {
+        return code;
+    }
 }