Add implements Serializable to all model classes to support native image (GraalVM) (#1074)

---------

Co-authored-by: Jeremie Bresson <jeremie.bresson@unblu.com>

Author: nilchina

src/main/java/org/gitlab4j/api/GitLabApiException.java

@@ -22,8 +22,8 @@
  * with a GitLab API endpoint.
  */
 public class GitLabApiException extends Exception {
-
     private static final long serialVersionUID = 1L;
+
     private StatusType statusInfo;
     private int httpStatus;
     private String message;

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

@@ -1,20 +1,21 @@
 package org.gitlab4j.api.models;
 
-import java.util.Date;
-import java.util.List;
-import java.util.Map;
-
-import org.gitlab4j.api.utils.JacksonJsonEnumHelper;
-import org.gitlab4j.api.utils.JacksonJson;
-
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonValue;
+import org.gitlab4j.api.utils.JacksonJson;
+import org.gitlab4j.api.utils.JacksonJsonEnumHelper;
+
+import java.io.Serializable;
+import java.util.Date;
+import java.util.List;
+import java.util.Map;
 
-public class AbstractEpic<E extends AbstractEpic<E>> extends AbstractMinimalEpic<E> {
+public class AbstractEpic<E extends AbstractEpic<E>> extends AbstractMinimalEpic<E> implements Serializable {
+    private static final long serialVersionUID = 1L;
 
-   public enum EpicState {
+    public enum EpicState {
         OPENED, CLOSED, ALL;
 
        private static JacksonJsonEnumHelper<EpicState> enumHelper = new JacksonJsonEnumHelper<>(EpicState.class);

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

@@ -1,12 +1,14 @@
 
 package org.gitlab4j.api.models;
 
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import org.gitlab4j.api.utils.JacksonJson;
 
-import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import java.io.Serializable;
 
 @JsonIgnoreProperties(ignoreUnknown = true)
-public abstract class AbstractGroup<G extends AbstractGroup<G>> {
+public abstract class AbstractGroup<G extends AbstractGroup<G>> implements Serializable {
+    private static final long serialVersionUID = 1L;
 
     private Long id;
     private String name;

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

@@ -1,22 +1,24 @@
 
 package org.gitlab4j.api.models;
 
-import java.util.Date;
-import java.util.List;
-
-import org.gitlab4j.api.Constants.IssueState;
-import org.gitlab4j.api.utils.JacksonJson;
-
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.databind.node.IntNode;
 import com.fasterxml.jackson.databind.node.LongNode;
 import com.fasterxml.jackson.databind.node.TextNode;
 import com.fasterxml.jackson.databind.node.ValueNode;
+import org.gitlab4j.api.Constants.IssueState;
+import org.gitlab4j.api.utils.JacksonJson;
+
+import java.io.Serializable;
+import java.util.Date;
+import java.util.List;
 
-public abstract class AbstractIssue {
+public abstract class AbstractIssue implements Serializable {
+    private static final long serialVersionUID = 1L;
 
-    public static class TaskCompletionStatus {
+    public static class TaskCompletionStatus implements Serializable {
+        private static final long serialVersionUID = 1L;
 
         private Integer count;
         private Integer completedCount;

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

@@ -2,7 +2,10 @@
 
 import org.gitlab4j.api.utils.JacksonJson;
 
-public class AbstractMinimalEpic<E extends AbstractMinimalEpic<E>> {
+import java.io.Serializable;
+
+public class AbstractMinimalEpic<E extends AbstractMinimalEpic<E>> implements Serializable {
+    private static final long serialVersionUID = 1L;
 
     private Long id;
     private Long iid;

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

@@ -1,13 +1,14 @@
 package org.gitlab4j.api.models;
 
-import java.util.Date;
-
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import org.gitlab4j.api.utils.JacksonJson;
 
-import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import java.io.Serializable;
+import java.util.Date;
 
 @JsonIgnoreProperties(ignoreUnknown = true)
-public abstract class AbstractUser<U extends AbstractUser<U>> {
+public abstract class AbstractUser<U extends AbstractUser<U>> implements Serializable {
+    private static final long serialVersionUID = 1L;
 
     private String avatarUrl;
     private Date createdAt;

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

@@ -2,7 +2,10 @@
 
 import org.gitlab4j.api.GitLabApiForm;
 
-public class AcceptMergeRequestParams {
+import java.io.Serializable;
+
+public class AcceptMergeRequestParams implements Serializable {
+    private static final long serialVersionUID = 1L;
 
     private String mergeCommitMessage;
     private Boolean mergeWhenPipelineSucceeds;

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

@@ -3,6 +3,7 @@
 import java.util.Date;
 
 public class AccessRequest extends AbstractUser<AccessRequest> {
+    private static final long serialVersionUID = 1L;
 
     private Date requestedAt;
     private AccessLevel accessLevel;

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

@@ -2,11 +2,14 @@
 
 import org.gitlab4j.api.GitLabApiForm;
 
+import java.io.Serializable;
+
 /**
  * This class is used by the ProtectedBranchesAPi to set up the
  * allowed_to_push, allowed_to_merge, and allowed_to_unprotect values.
  */
-public class AllowedTo {
+public class AllowedTo implements Serializable {
+    private static final long serialVersionUID = 1L;
 
     private AccessLevel accessLevel;
     private Long userId;

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

@@ -1,6 +1,9 @@
 package org.gitlab4j.api.models;
 
-public class Application {
+import java.io.Serializable;
+
+public class Application implements Serializable {
+    private static final long serialVersionUID = 1L;
 
     private Long id;
     private String applicationId;