Android: Issue in sending MMS with SmsManager programmatically

I need to send MMS programmatically for which Android has provided support from Lollipop:

http://developer.android.com/reference/android/telephony/SmsManager.html#sendMultimediaMessage(android.content.Context, android.net.Uri, java.lang.String, android.os.Bundle, android.app.PendingIntent)

I have found this SO link for the same issue:

Unable to send MMS using SmsManager

Below are issues with MMS API:

• It is not clear how to build message PDU to send.
• Where to mention destination address?
• What is config-overrides?

I searched for PDU message format for MMS but no success.

Any help is appreciated,

Thanks