automation tests for gmail, rest api, soap ws

Hi guys,

Please review my example project for testing:
1.Testing rest api. (Rest api sen json) (articles: http://helpqaspb.com/restapi.htm)
2.Gmail testing example of tests.(articles: http://helpqaspb.com/test.htm )
3.Soap ws- simple test.(send xml and parse result. http://helpqaspb.com/soapui.htm)

Regards,
Slava

magic number... why 16?