Add comments detailing how to use PacketsV3::Builder.
Add comments detailing how to use PacketsV3::Builder.

google/stenographer,nbareil/stenographer,nbareil/stenographer,dcode/stenographer,google/stenographer,gconnell/stenographer,dcode/stenographer,google/stenographer,dcode/stenographer,gconnell/stenographer,gconnell/stenographer,nbareil/stenographer