Make CodeStubBuilder fields protected.
Make CodeStubBuilder fields protected.

Heliozoa/tdd-pingpong,tdd-pingis/tdd-pingpong,tdd-pingis/tdd-pingpong,Heliozoa/tdd-pingpong,tdd-pingis/tdd-pingpong,Heliozoa/tdd-pingpong,tdd-pingis/tdd-pingpong,Heliozoa/tdd-pingpong