@router_b_a.get("/")
def get_b_a():
    return "Hello B A"


@router_b_a.get("/override", response_class=HTMLResponse)
def get_b_a_path_override():
    return "Hello B A"


@router_b_a_c_override.get("/")
def get_b_a_c():
    return "Hello B A C"


@router_b_a_c_override.get("/override", response_class=OverrideResponse)
def get_b_a_c_path_override():
    return {"msg": "Hello B A C"}


router_b_a.include_router(

@router_b_a.get("/")
def get_b_a():
    return "Hello B A"


@router_b_a.get("/override", response_class=HTMLResponse)
def get_b_a_path_override():
    return "Hello B A"


@router_b_a_c_override.get("/")
def get_b_a_c():
    return "Hello B A C"


@router_b_a_c_override.get("/override", response_class=OverrideResponse)
def get_b_a_c_path_override():
    return {"msg": "Hello B A C"}


router_b_a.include_router(

router_a = APIRouter(route_class=APIRouteA)
router_b = APIRouter(route_class=APIRouteB)
router_c = APIRouter(route_class=APIRouteC)


@router_a.get("/")
def get_a():
    return {"msg": "A"}


@router_b.get("/")
def get_b():
    return {"msg": "B"}


@router_c.get("/")
def get_c():
    return {"msg": "C"}


router_b.include_router(router=router_c, prefix="/c")