How to access Shared Preferences data saved by flutter?

Question

I have saved some SharedPreferences data using flutter like so:

SharedPreferences.getInstance().then((prefs) {
   prefs.setString("my_data", "some data");
});

and also I'm createing a MethodChannel to do something using android and I want to access the SharedPreferences I have already created with flutter but I don't know how !
in android we can access SharedPreferences by specifying a name to the it like so:

getSharedPreferences("name");

But in flutter I don't sepcify a name I just call SharedPreferences.getInstance()