Add method for clearing exchange messages.
Add method for clearing exchange messages.

TouK/vumi,harrissoerja/vumi,harrissoerja/vumi,vishwaprakashmishra/xmatrix,vishwaprakashmishra/xmatrix,harrissoerja/vumi,TouK/vumi,TouK/vumi,vishwaprakashmishra/xmatrix