added some xml comments
added some xml comments



Former-commit-id: ec1972c17cb944f8b86238aca1d430a4e187397d
phatboyg/MassTransit,MassTransit/MassTransit,SanSYS/MassTransit,MassTransit/MassTransit,phatboyg/MassTransit,SanSYS/MassTransit,jacobpovar/MassTransit,jacobpovar/MassTransit