aoubut MKLaunchOptionsDirectionsModeKey，
when I use MKLaunchOptionsDirectionsModeTransit as a mode in my code to call function openMaps ，the apple map app launches，it has 4 mode ，subbay or ferry，bus etc，so how can I specify the subway to transit before apple map app launch，so that I do not need to select on the map app，just specific subway in my own app， then the map app auto select the subway transit navigation。now it shows two much usless route。