docs(scheduled-pipeline): add java-docs

Author: rubenvitt

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

@@ -542,12 +542,20 @@ public PipelineSchedule updatePipelineSchedule(Object projectIdOrPath,PipelineSc
      */
     public PipelineSchedule takeOwnershipPipelineSchedule(Object projectIdOrPath, Long pipelineScheduleId) throws GitLabApiException {
 
-        Response response = post(Response.Status.OK, "", "projects", getProjectIdOrPath(projectIdOrPath),  "pipeline_schedules", pipelineScheduleId, "take_ownership");
+        Response response = post(Response.Status.OK, "projects", getProjectIdOrPath(projectIdOrPath),  "pipeline_schedules", pipelineScheduleId, "take_ownership");
         return (response.readEntity(PipelineSchedule.class));
     }
 
+    /**
+     * Trigger a new scheduled pipeline, which runs immediately.
+     *
+     * <pre><code>POST /projects/:id/pipeline_schedules/:pipeline_schedule_id/play</code></pre>
+     *
+     * @param projectIdOrPath projectIdOrPath the project in the form of an Long(ID), String(path), or Project instance, required
+     * @param pipelineScheduleId the pipelineSchedule instance id which should run immediately
+     * @throws GitLabApiException if any exception occurs during execution
+     */
     public void playPipelineSchedule(Object projectIdOrPath, Long pipelineScheduleId) throws GitLabApiException {
-
         post(Response.Status.CREATED, "projects", getProjectIdOrPath(projectIdOrPath),  "pipeline_schedules", pipelineScheduleId, "play");
     }