Get project users (#87)

* Get project users (not members)
https://docs.gitlab.com/ce/api/projects.html#get-project-users

* Removed wildcard imports

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

@@ -23,23 +23,23 @@
 
 package org.gitlab4j.api;
 
-import java.io.UnsupportedEncodingException;
-import java.net.URLEncoder;
-import java.util.List;
-
-import javax.ws.rs.core.Form;
-import javax.ws.rs.core.GenericType;
-import javax.ws.rs.core.Response;
-
 import org.gitlab4j.api.GitLabApi.ApiVersion;
 import org.gitlab4j.api.models.Event;
 import org.gitlab4j.api.models.Issue;
 import org.gitlab4j.api.models.Member;
 import org.gitlab4j.api.models.Project;
 import org.gitlab4j.api.models.ProjectHook;
+import org.gitlab4j.api.models.ProjectUser;
 import org.gitlab4j.api.models.Snippet;
 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.io.UnsupportedEncodingException;
+import java.net.URLEncoder;
+import java.util.List;
+
 /**
  * This class provides an entry point to all the GitLab API project calls.
  */
@@ -112,8 +112,8 @@ public class ProjectApi extends AbstractApi implements Constants {
      *      Constants.ProjectOrderBy, Constants.SortOrder, String, Boolean, Boolean, Boolean, Boolean, Boolean)}
      */
     public List<Project> getProjects(Boolean archived, Visibility visibility, String orderBy,
-            String sort, String search, Boolean simple, Boolean owned, Boolean membership,
-            Boolean starred, Boolean statistics) throws GitLabApiException {
+                                     String sort, String search, Boolean simple, Boolean owned, Boolean membership,
+                                     Boolean starred, Boolean statistics) throws GitLabApiException {
 
         GitLabApiForm formData = new GitLabApiForm()
                 .withParam("archived", archived)
@@ -921,6 +921,17 @@ public class ProjectApi extends AbstractApi implements Constants {
         delete(expectedStatus, null, "projects", projectId, "members", userId);
     }
 
+    /**
+     * Get a list of project users. This list includes all project members and all users assigned to project parent groups.
+     * @param projectId the project ID to get users for
+     * @return the users belonging to the specified project and its parent groups
+     * @throws GitLabApiException
+     */
+    public List<ProjectUser> getProjectUsers(Integer projectId) throws GitLabApiException {
+        Response response = get(Response.Status.OK, this.getDefaultPerPageParam(), "projects", projectId, "users");
+        return (response.readEntity(new GenericType<List<ProjectUser>>() {}));
+    }
+
     /**
      * Get the project events for specific project. Sorted from newest to latest.
      *

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

+package org.gitlab4j.api.models;
+
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlRootElement;
+
+@XmlRootElement
+@XmlAccessorType(XmlAccessType.FIELD)
+public class ProjectUser {
+
+    private Integer id;
+    private String username;
+    private String name;
+    private String state;
+    private String avatarUrl;
+    private String webUrl;
+
+    public Integer getId() {
+        return id;
+    }
+
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getState() {
+        return state;
+    }
+
+    public void setState(String state) {
+        this.state = state;
+    }
+
+    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;
+    }
+}