Document instance calls fix.
Document instance calls fix.

Signed-off-by: enyst <9b6d94d61d4a1e60f7cbfec06c519f2f03605f61@gmail.com>

mikecao/flight,rakesh-mohanta/flight-1,kerkness/flight,kerkness/flight,tempbottle/flight,mikecao/flight,hebaoxia/flight