@@ -0,0 +1,596 @@
+package com.google.sps.queue;%0A%0Aimport java.util.List;%0Aimport java.util.Objects;%0A%0Apublic class Queue %7B%0A  private List%3CString%3E queue;%0A  private Helping helping;%0A%0A  public Queue(List%3CString%3E queue, Helping helping) %7B%0A    this.queue = Objects.requireNonNull(queue);%0A    this.helping = helping;%0A  %7D%0A%0A  public static class Helping %7B%0A    private String email;%0A    private String workspace;%0A    private static final String WORKSPACE = %22/workspace/?workspaceID=%22;%0A%0A    public Helping(String email, String workspaceID) %7B%0A      this.email = email;%0A      this.workspace = WORKSPACE + workspaceID;%0A    %7D%0A  %7D%0A%7D

Add Queue POJO to hold current queue status.