improve ProjectHook setting

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

@@ -2233,6 +2233,7 @@ public ProjectHook addHook(Object projectIdOrPath, String url, ProjectHook enabl
                 .withParam("deployment_events", enabledHooks.getDeploymentEvents(), false)
                 .withParam("releases_events", enabledHooks.getReleasesEvents(), false)
                 .withParam("deployment_events", enabledHooks.getDeploymentEvents(), false)
+                .withParam("description", enabledHooks.getDescription(), false)
                 .withParam("token", secretToken, false);
         Response response = post(Response.Status.CREATED, formData, "projects", getProjectIdOrPath(projectIdOrPath), "hooks");
         return (response.readEntity(ProjectHook.class));
@@ -2336,6 +2337,7 @@ public ProjectHook modifyHook(ProjectHook hook) throws GitLabApiException {
             .withParam("repository_update_events", hook.getRepositoryUpdateEvents(), false)
             .withParam("releases_events", hook.getReleasesEvents(), false)
             .withParam("deployment_events", hook.getDeploymentEvents(), false)
+            .withParam("description", hook.getDescription(), false)
             .withParam("token", hook.getToken(), false);
 
         Response response = put(Response.Status.OK, formData.asMap(), "projects", hook.getProjectId(), "hooks", hook.getId());

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

@@ -33,6 +33,8 @@ public class ProjectHook implements Serializable {
     private Boolean deploymentEvents;
     private Boolean releasesEvents;
 
+    private String description;
+
     public Boolean getBuildEvents() {
         return buildEvents;
     }
@@ -177,6 +179,14 @@ public void setReleasesEvents(Boolean releasesEvents) {
         this.releasesEvents = releasesEvents;
     }
 
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
     public Boolean getConfidentialIssuesEvents() {
         return confidentialIssuesEvents;
     }

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

@@ -15,5 +15,6 @@
   "pipeline_events": true,
   "wiki_page_events": true,
   "enable_ssl_verification": true,
-  "created_at": "2012-10-12T17:04:47Z"
+  "created_at": "2012-10-12T17:04:47Z",
+  "description": "hook description"
 }