用于搜索文件的Google drive V3 java api语法

我的问题是-如何将搜索参数传递给该方法。我没有找到任何文档或样本进行搜索。任何示例都适用于我。

源代码

      String npTok = null;
      String queryParam ="modifiedTime > '2012-06-04T12:00:00' and (mimeType 
      contains 'image/' )";
      com.google.api.services.drive.Drive.Files.List qry =    drive.files().list().setFields("files(id, name)").setQ(queryParam);

        com.google.api.services.drive.model.FileList gLst = qry.execute();
        for (com.google.api.services.drive.model.File gFl : gLst.getItems())
        { 
            String id = gFl.getId();
            System.out.println("ID==>"+id);
        } 

错误

{
  "code" : 400,
  "errors" : [ {
    "domain" : "global",
    "location" : "fields",
    "locationType" : "parameter",
    "message" : "Invalid field selection name",
    "reason" : "invalidParameter"
  } ],
  "message" : "Invalid field selection name"
}