Add erased_at attribute to Job class

This adds possibility to identify erased jobs.

src/main/java/org/gitlab4j/api/models/Job.java

@@ -12,6 +12,7 @@ public class Job {
     private String coverage;
     private Date createdAt;
     private Date finishedAt;
+    private Date erasedAt;
     private Date artifactsExpireAt;
     private String name;
     private Pipeline pipeline;
@@ -64,6 +65,23 @@ public void setFinishedAt(Date finishedAt) {
         this.finishedAt = finishedAt;
     }
 
+    /**
+     * When someone deletes job using
+     * <a href="https://docs.gitlab.com/ee/api/jobs.html#erase-a-job">job erase api</a>, you can
+     * detect it using this field. Normally erasing job does mean only that job artifacts and
+     * a job logs gets removed. Job metadata (started_at, duration, ....) stays in place.
+     *
+     * You can use this attribute to filter out such jobs, that have erased at non-null if you need
+     * to.
+     */
+    public Date getErasedAt() {
+        return erasedAt;
+    }
+
+    public void setErasedAt(Date erasedAt) {
+        this.erasedAt = erasedAt;
+    }
+
     public Date getArtifactsExpireAt() {
         return artifactsExpireAt;
     }
@@ -248,6 +266,11 @@ public Job withFinishedAt(Date finishedAt) {
         return this;
     }
 
+    public Job withErasedAt(Date erasedAt) {
+        this.erasedAt = erasedAt;
+        return this;
+    }
+
     public Job withName(String name) {
         this.name = name;
         return this;

src/test/resources/org/gitlab4j/api/job.json

@@ -37,6 +37,7 @@
     "tag": false,
     "web_url": "https://example.com/foo/bar/-/jobs/7",
     "allow_failure": false,
+    "erased_at": "2016-01-11T11:30:19.914Z",
     "duration": 0.465,
     "queued_duration": 0.010,
     "user": {