def process_import_job_from_file(list, file_path, report_email = nil, postback_url = nil, options = {})
      data = options
      data['list'] = list
      data['file'] = file_path
      process_job(:import, data, report_email, postback_url, 'file')
    end
def process_import_job_from_file(list, file_path, report_email = nil, postback_url = nil, options = {})
      data = options
      data['list'] = list
      data['file'] = file_path
      process_job(:import, data, report_email, postback_url, 'file')
    end
implementation for import job using file upload