Updated GroupApi to match latest spec.

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

 package org.gitlab4j.api;
 
-import javax.ws.rs.core.Form;
-import javax.ws.rs.core.GenericType;
-import javax.ws.rs.core.Response;
-
 import org.gitlab4j.api.models.Group;
 import org.gitlab4j.api.models.Member;
+import org.gitlab4j.api.models.Project;
+import org.gitlab4j.api.models.Visibility;
 
+import javax.ws.rs.core.Form;
+import javax.ws.rs.core.GenericType;
+import javax.ws.rs.core.Response;
 import java.util.List;
 
 /**
@@ -32,6 +33,21 @@ public class GroupApi extends AbstractApi {
         }));
     }
 
+    /**
+     * Get a list of projects belonging to the specified group ID.
+     *
+     * GET /groups/:id/projects
+     *
+     * @param groupId the group ID to list the projects for
+     * @return a list of projects belonging to the specified group ID
+     * @throws GitLabApiException if any exception occurs
+     */
+    public List<Project> getProjects(int groupId) throws GitLabApiException {
+        Response response = get(Response.Status.OK, null, "groups", groupId, "projects");
+        return (response.readEntity(new GenericType<List<Project>>() {
+        }));
+    }
+
     /**
      * Get all details of a group.
      * 
@@ -47,7 +63,7 @@ public class GroupApi extends AbstractApi {
     }
 
     /**
-     * Creates a new project group. Available only for admin.
+     * Creates a new project group. Available only for users who can create groups.
      * 
      * POST /groups
      * 
@@ -63,6 +79,79 @@ public class GroupApi extends AbstractApi {
         post(Response.Status.CREATED, formData, "groups");
     }
 
+    /**
+     * Creates a new project group. Available only for users who can create groups.
+     * 
+     * POST /groups
+     * 
+     * @param name the name of the group to add
+     * @param path the path for the group
+     * @param description (optional) - The group's description
+     * @param membershipLock (optional, boolean) - Prevent adding new members to project membership within this group
+     * @param shareWithGroupLock (optional, boolean) - Prevent sharing a project with another group within this group
+     * @param visibility (optional) - The group's visibility. Can be private, internal, or public.
+     * @param lfsEnabled (optional) - Enable/disable Large File Storage (LFS) for the projects in this group
+     * @param requestAccessEnabled (optional) - Allow users to request member access.
+     * @param parentId (optional) - The parent group id for creating nested group.
+     * @param sharedRunnersMinutesLimit (optional) - (admin-only) Pipeline minutes quota for this group
+     * @throws GitLabApiException if any exception occurs
+     */
+    public void addGroup(String name, String path, String description, Boolean membershipLock,
+            Boolean shareWithGroupLock, Visibility visibility, Boolean lfsEnabled, Boolean requestAccessEnabled,
+            Integer parentId, Integer sharedRunnersMinutesLimit) throws GitLabApiException {
+
+        Form formData = new GitLabApiForm()
+                .withParam("name", name)
+                .withParam("path", path)
+                .withParam("description", description)
+                .withParam("membership_lock", membershipLock)
+                .withParam("share_with_group_lock", shareWithGroupLock)
+                .withParam("visibility", visibility)
+                .withParam("lfs_enabled", lfsEnabled)
+                .withParam("request_access_enabled", requestAccessEnabled)
+                .withParam("parent_id", parentId)
+                .withParam("shared_runners_minutes_limit", sharedRunnersMinutesLimit);
+        post(Response.Status.CREATED, formData, "groups");
+    }
+
+    /**
+     * Creates a new project group. Available only for users who can create groups.
+     * 
+     * PUT /groups
+     *
+     * @param groupId the ID of the group to update
+     * @param name the name of the group to add
+     * @param path the path for the group
+     * @param description (optional) - The group's description
+     * @param membershipLock (optional, boolean) - Prevent adding new members to project membership within this group
+     * @param shareWithGroupLock (optional, boolean) - Prevent sharing a project with another group within this group
+     * @param visibility (optional) - The group's visibility. Can be private, internal, or public.
+     * @param lfsEnabled (optional) - Enable/disable Large File Storage (LFS) for the projects in this group
+     * @param requestAccessEnabled (optional) - Allow users to request member access.
+     * @param parentId (optional) - The parent group id for creating nested group.
+     * @param sharedRunnersMinutesLimit (optional) - (admin-only) Pipeline minutes quota for this group
+     * @throws GitLabApiException if any exception occurs
+     */
+    public Group updateGroup(Integer groupId, String name, String path, String description, Boolean membershipLock,
+            Boolean shareWithGroupLock, Visibility visibility, Boolean lfsEnabled, Boolean requestAccessEnabled,
+            Integer parentId, Integer sharedRunnersMinutesLimit) throws GitLabApiException {
+
+        Form formData = new GitLabApiForm()
+                .withParam("name", name)
+                .withParam("path", path)
+                .withParam("description", description)
+                .withParam("membership_lock", membershipLock)
+                .withParam("share_with_group_lock", shareWithGroupLock)
+                .withParam("visibility", visibility)
+                .withParam("lfs_enabled", lfsEnabled)
+                .withParam("request_access_enabled", requestAccessEnabled)
+                .withParam("parent_id", parentId)
+                .withParam("shared_runners_minutes_limit", sharedRunnersMinutesLimit);
+
+        Response response = put(Response.Status.OK, formData.asMap(), "groups", groupId);
+        return (response.readEntity(Group.class));
+    }
+
     /**
      * Removes group with all projects inside.
      * 
@@ -139,4 +228,4 @@ public class GroupApi extends AbstractApi {
     public void removeMember(Integer projectId, Integer userId) throws GitLabApiException {
         delete(Response.Status.OK, null, "groups", projectId, "members", userId);
     }
-}
+}
\ No newline at end of file

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

@@ -13,9 +13,18 @@ public class Group {
 
     private Integer id;
     private String name;
-    private Integer ownerId;
     private String path;
+    private String description;
+    private Visibility visibility;
+    private String avatarUrl;
+    private String webUrl;
+    private Boolean requestAccessEnabled;
+    private String fullName;
+    private String fullPath;
+    private Integer parentId;
+    private Integer sharedRunnersMinutesLimit;
     private List<Project> projects;
+    private List<Project> sharedProjects;
 
     public Integer getId() {
         return this.id;
@@ -33,14 +42,6 @@ public class Group {
         this.name = name;
     }
 
-    public Integer getOwnerId() {
-        return this.ownerId;
-    }
-
-    public void setOwnerId(Integer ownerId) {
-        this.ownerId = ownerId;
-    }
-
     public String getPath() {
         return this.path;
     }
@@ -49,6 +50,78 @@ public class Group {
         this.path = path;
     }
 
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public Visibility getVisibility() {
+        return visibility;
+    }
+
+    public void setVisibility(Visibility visibility) {
+        this.visibility = visibility;
+    }
+
+    public String getAvatarUrl() {
+        return avatarUrl;
+    }
+
+    public void setAvatarUrl(String avatarUrl) {
+        this.avatarUrl = avatarUrl;
+    }
+
+    public String getWebUrl() {
+        return webUrl;
+    }
+
+    public void setWebUrl(String webUrl) {
+        this.webUrl = webUrl;
+    }
+
+    public Boolean getRequestAccessEnabled() {
+        return requestAccessEnabled;
+    }
+
+    public void setRequestAccessEnabled(Boolean requestAccessEnabled) {
+        this.requestAccessEnabled = requestAccessEnabled;
+    }
+
+    public String getFullName() {
+        return fullName;
+    }
+
+    public void setFullName(String fullName) {
+        this.fullName = fullName;
+    }
+
+    public String getFullPath() {
+        return fullPath;
+    }
+
+    public void setFullPath(String fullPath) {
+        this.fullPath = fullPath;
+    }
+
+    public Integer getParentId() {
+        return parentId;
+    }
+
+    public void setParentId(Integer parentId) {
+        this.parentId = parentId;
+    }
+
+    public Integer getSharedRunnersMinutesLimit() {
+        return sharedRunnersMinutesLimit;
+    }
+
+    public void setSharedRunnersMinutesLimit(Integer sharedRunnersMinutesLimit) {
+        this.sharedRunnersMinutesLimit = sharedRunnersMinutesLimit;
+    }
+
     public List<Project> getProjects() {
         return (projects);
     }
@@ -56,4 +129,12 @@ public class Group {
     public void setProjects(List<Project> projects) {
         this.projects = projects;
     }
+
+    public List<Project> getSharedProjects() {
+        return (sharedProjects);
+    }
+
+    public void setSharedProjects(List<Project> sharedProjects) {
+        this.sharedProjects = sharedProjects;
+    }
 }

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

@@ -10,29 +10,11 @@ import javax.xml.bind.annotation.XmlRootElement;
 @XmlAccessorType(XmlAccessType.FIELD)
 public class Namespace {
 
-    private Date createdAt;
-    private String description;
     private Integer id;
     private String name;
-    private Integer ownerId;
     private String path;
-    private String updatedAt;
-
-    public Date getCreatedAt() {
-        return this.createdAt;
-    }
-
-    public void setCreatedAt(Date createdAt) {
-        this.createdAt = createdAt;
-    }
-
-    public String getDescription() {
-        return this.description;
-    }
-
-    public void setDescription(String description) {
-        this.description = description;
-    }
+    private String kind;
+    private String fullPath;
 
     public Integer getId() {
         return this.id;
@@ -50,14 +32,6 @@ public class Namespace {
         this.name = name;
     }
 
-    public Integer getOwnerId() {
-        return this.ownerId;
-    }
-
-    public void setOwnerId(Integer ownerId) {
-        this.ownerId = ownerId;
-    }
-
     public String getPath() {
         return this.path;
     }
@@ -66,11 +40,19 @@ public class Namespace {
         this.path = path;
     }
 
-    public String getUpdatedAt() {
-        return this.updatedAt;
+    public String getKind() {
+        return kind;
+    }
+
+    public void setKind(String kind) {
+        this.kind = kind;
+    }
+
+    public String getFullPath() {
+        return fullPath;
     }
 
-    public void setUpdatedAt(String updatedAt) {
-        this.updatedAt = updatedAt;
+    public void setFullPath(String fullPath) {
+        this.fullPath = fullPath;
     }
 }

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

 {
-    "id": 1,
-    "name": "Foobar Group",
-    "path": "foo-bar",
-    "owner_id": 18
+  "id": 4,
+  "name": "Twitter",
+  "path": "twitter",
+  "description": "Aliquid qui quis dignissimos distinctio ut commodi voluptas est.",
+  "visibility": "public",
+  "web_url": "https://gitlab.example.com/groups/twitter",
+  "request_access_enabled": false,
+  "full_name": "Twitter",
+  "full_path": "twitter",
+  "parent_id": 1234,
+  "shared_runners_minutes_limit": 133,
+  "projects": [
+    {
+      "id": 7,
+      "description": "Voluptas veniam qui et beatae voluptas doloremque explicabo facilis.",
+      "default_branch": "master",
+      "archived": false,
+      "visibility": "public",
+      "ssh_url_to_repo": "git@gitlab.example.com:twitter/typeahead-js.git",
+      "http_url_to_repo": "https://gitlab.example.com/twitter/typeahead-js.git",
+      "web_url": "https://gitlab.example.com/twitter/typeahead-js",
+      "name": "Typeahead.Js",
+      "name_with_namespace": "Twitter / Typeahead.Js",
+      "path": "typeahead-js",
+      "path_with_namespace": "twitter/typeahead-js",
+      "issues_enabled": true,
+      "merge_requests_enabled": true,
+      "wiki_enabled": true,
+      "jobs_enabled": true,
+      "snippets_enabled": false,
+      "container_registry_enabled": true,
+      "created_at": "2016-06-17T07:47:25.578Z",
+      "last_activity_at": "2016-06-17T07:47:25.881Z",
+      "shared_runners_enabled": true,
+      "creator_id": 1,
+      "namespace": {
+        "id": 4,
+        "name": "Twitter",
+        "path": "twitter",
+        "kind": "group"
+      },
+      "star_count": 0,
+      "forks_count": 0,
+      "open_issues_count": 3,
+      "public_jobs": true,
+      "shared_with_groups": [],
+      "request_access_enabled": false
+    },
+    {
+      "id": 6,
+      "description": "Aspernatur omnis repudiandae qui voluptatibus eaque.",
+      "default_branch": "master",
+      "archived": false,
+      "visibility": "internal",
+      "ssh_url_to_repo": "git@gitlab.example.com:twitter/flight.git",
+      "http_url_to_repo": "https://gitlab.example.com/twitter/flight.git",
+      "web_url": "https://gitlab.example.com/twitter/flight",
+      "name": "Flight",
+      "name_with_namespace": "Twitter / Flight",
+      "path": "flight",
+      "path_with_namespace": "twitter/flight",
+      "issues_enabled": true,
+      "merge_requests_enabled": true,
+      "wiki_enabled": true,
+      "jobs_enabled": true,
+      "snippets_enabled": false,
+      "container_registry_enabled": true,
+      "created_at": "2016-06-17T07:47:24.661Z",
+      "last_activity_at": "2016-06-17T07:47:24.838Z",
+      "shared_runners_enabled": true,
+      "creator_id": 1,
+      "namespace": {
+        "id": 4,
+        "name": "Twitter",
+        "path": "twitter",
+        "kind": "group"
+      },
+      "star_count": 0,
+      "forks_count": 0,
+      "open_issues_count": 8,
+      "public_jobs": true,
+      "shared_with_groups": [],
+      "request_access_enabled": false
+    }
+  ],
+  "shared_projects": [
+    {
+      "id": 8,
+      "description": "Velit eveniet provident fugiat saepe eligendi autem.",
+      "default_branch": "master",
+      "archived": false,
+      "visibility": "private",
+      "ssh_url_to_repo": "git@gitlab.example.com:h5bp/html5-boilerplate.git",
+      "http_url_to_repo": "https://gitlab.example.com/h5bp/html5-boilerplate.git",
+      "web_url": "https://gitlab.example.com/h5bp/html5-boilerplate",
+      "name": "Html5 Boilerplate",
+      "name_with_namespace": "H5bp / Html5 Boilerplate",
+      "path": "html5-boilerplate",
+      "path_with_namespace": "h5bp/html5-boilerplate",
+      "issues_enabled": true,
+      "merge_requests_enabled": true,
+      "wiki_enabled": true,
+      "jobs_enabled": true,
+      "snippets_enabled": false,
+      "container_registry_enabled": true,
+      "created_at": "2016-06-17T07:47:27.089Z",
+      "last_activity_at": "2016-06-17T07:47:27.310Z",
+      "shared_runners_enabled": true,
+      "creator_id": 1,
+      "namespace": {
+        "id": 5,
+        "name": "H5bp",
+        "path": "h5bp",
+        "kind": "group"
+      },
+      "star_count": 0,
+      "forks_count": 0,
+      "open_issues_count": 4,
+      "public_jobs": true,
+      "shared_with_groups": [
+        {
+          "group_id": 4,
+          "group_name": "Twitter",
+          "group_access_level": 30
+        },
+        {
+          "group_id": 3,
+          "group_name": "Gitlab Org",
+          "group_access_level": 10
+        }
+      ]
+    }
+  ]
 }
-

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

@@ -30,13 +30,9 @@
   "last_activity_at": "2013-09-30T13:46:02Z",
   "creator_id": 3,
   "namespace": {
-    "created_at": "2013-09-30T13:46:02Z",
-    "description": "",
     "id": 3,
     "name": "Diaspora",
-    "owner_id": 1,
-    "path": "diaspora",
-    "updated_at": "2013-09-30T13:46:02Z"
+    "path": "diaspora"
   },
   "permissions": {
     "project_access": {