Brought into spec with GitLab API docs (#352).

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

@@ -25,7 +25,11 @@ public class ProjectHook {
     private Boolean wikiPageEvents;
     private String token;
 
-    
+    private Boolean repositoryUpdateEvents;
+    private Boolean confidentialIssuesEvents;
+    private Boolean confidentialNoteEvents;
+    private String pushEventsBranchFilter;
+
     public Boolean getBuildEvents() {
         return buildEvents;
     }
@@ -146,6 +150,38 @@ public class ProjectHook {
         this.wikiPageEvents = wikiPageEvents;
     }
 
+    public Boolean getRepositoryUpdateEvents() {
+        return repositoryUpdateEvents;
+    }
+
+    public void setRepositoryUpdateEvents(Boolean repositoryUpdateEvents) {
+        this.repositoryUpdateEvents = repositoryUpdateEvents;
+    }
+
+    public Boolean getConfidentialIssuesEvents() {
+        return confidentialIssuesEvents;
+    }
+
+    public void setConfidentialIssuesEvents(Boolean confidentialIssuesEvents) {
+        this.confidentialIssuesEvents = confidentialIssuesEvents;
+    }
+
+    public Boolean getConfidentialNoteEvents() {
+        return confidentialNoteEvents;
+    }
+
+    public void setConfidentialNoteEvents(Boolean confidentialNoteEvents) {
+        this.confidentialNoteEvents = confidentialNoteEvents;
+    }
+
+    public String getPushEventsBranchFilter() {
+        return pushEventsBranchFilter;
+    }
+
+    public void setPushEventsBranchFilter(String pushEventsBranchFilter) {
+        this.pushEventsBranchFilter = pushEventsBranchFilter;
+    }
+
     /**
      * @return the do build events flag
      * @deprecated As of release 4.1.0, replaced by {@link #getBuildEvents()}