code: public java.util.List<String> getWorkspaceIds() {
          if (workspaceIds == null) {
              workspaceIds = new com.amazonaws.internal.SdkInternalList<String>();
          }
          return workspaceIds;
      }
docs: <p>
  The identifiers of the WorkSpaces. You cannot combine this parameter with any other filter.
  </p>
  <p>
  Because the <a>CreateWorkspaces</a> operation is asynchronous, the identifier it returns is not immediately
  available. If you immediately call <a>DescribeWorkspaces</a> with this identifier, no information is returned.
  </p>
  
  @return The identifiers of the WorkSpaces. You cannot combine this parameter with any other filter.</p>
  <p>
  Because the <a>CreateWorkspaces</a> operation is asynchronous, the identifier it returns is not
  immediately available. If you immediately call <a>DescribeWorkspaces</a> with this identifier, no
  information is returned.