sprockets/src/main/java/net/sf/sprockets/content/Content.java
public static void requestSyncNow(Account account, String authority, @Nullable Bundle extras) {
        if (extras == null) {
            extras = new Bundle();
        }
        extras.putBoolean(SYNC_EXTRAS_MANUAL, true);
        extras.putBoolean(SYNC_EXTRAS_EXPEDITED, true);
        ContentResolver.requestSync(account, authority, extras);
    }
public static void requestSyncNow(Account account, String authority, @Nullable Bundle extras) {
        if (extras == null) {
            extras = new Bundle();
        }
        extras.putBoolean(SYNC_EXTRAS_MANUAL, true);
        extras.putBoolean(SYNC_EXTRAS_EXPEDITED, true);
        ContentResolver.requestSync(account, authority, extras);
    }
Request that a sync starts immediately.

@see ContentResolver#requestSync(Account, String, Bundle)