code: function getSubmissionPDF(params, cb) {
    var resourcePath = config.addURIParams(constants.FORMS_BASE_PATH + "/submissions/:id/exportpdf", params);
    var method = "POST";
  
    params.resourcePath = resourcePath;
    params.method = method;
    params.data = params.data || {};
  
    params.fileRequest = true;
  
    mbaasRequest.admin(params, cb);
  }
docs: Getting A PDF Of A Submission
  @param params
  @param params.data
  @param params.data.coreLocation - The host name of the domain accessing the PDF.
  @param cb