Upload Completion Notification. set Correlation Id(String correlationId) 方法
Set the correlationId that correlates this FileUploadCompletionNotification to the earlier request to get the SAS URI for this upload from IoT Hub. Must equal getCorrelationId().
public void setCorrelationId(String correlationId)
the unique identifier that correlates this file upload status to a SAS URI that IoT Hub retreived from Azure Storage earlier.