Support for Getting Group Members from the API

src/main/java/org/gitlab/api/GitlabAPI.java

@@ -87,6 +87,29 @@ public class GitlabAPI {
         return retrieve().getAll(tailUrl, GitlabGroup[].class);
     }
 
+    /**
+     * Gets all members of a Group
+     *
+     * @param group The GitLab Group
+     *
+     * @return The Group Members
+     */
+    public List<GitlabGroupMember> getGroupMembers(GitlabGroup group) throws IOException {
+        return getGroupMembers(group.getId());
+    }
+
+    /**
+     * Gets all members of a Group
+     *
+     * @param groupId The id of the GitLab Group
+     *
+     * @return The Group Members
+     */
+    public List<GitlabGroupMember> getGroupMembers(Integer groupId) throws IOException {
+        String tailUrl = GitlabGroup.URL + "/" + groupId + GitlabGroupMember.URL;
+        return Arrays.asList(retrieve().to(tailUrl, GitlabGroupMember[].class));
+    }
+
     /**
      * Creates a Group
      *

src/main/java/org/gitlab/api/models/GitlabAbstractMember.java

+package org.gitlab.api.models;
+
+import org.codehaus.jackson.annotate.JsonProperty;
+
+public abstract class GitlabAbstractMember extends GitlabUser {
+
+	public static final String URL = "/members";
+
+    @JsonProperty("access_level")
+	private int _accessLevel;
+
+	public int getAccessLevel() {
+		return _accessLevel;
+	}
+
+	public void setAccessLevel(int accessLevel) {
+		_accessLevel = accessLevel;
+	}
+
+}

src/main/java/org/gitlab/api/models/GitlabGroupMember.java

+package org.gitlab.api.models;
+
+public class GitlabGroupMember extends GitlabAbstractMember {
+}

src/main/java/org/gitlab/api/models/GitlabProjectMember.java

 package org.gitlab.api.models;
 
-public class GitlabProjectMember extends GitlabUser {
-
-	public static final String URL = "/members";
-	
-	private int _accessLevel;
-
-	public int getAccessLevel() {
-		return _accessLevel;
-	}
-
-	public void setAccessLevel(int accessLevel) {
-		_accessLevel = accessLevel;
-	}
-	
+public class GitlabProjectMember extends GitlabAbstractMember {
 }