public boolean isHideable() {
        return mHideable;
    }
Gets whether this bottom sheet can hide when it is swiped down.

@return {@code true} if this bottom sheet can hide.
@attr ref android.support.design.R.styleable#BottomSheetBehavior_Layout_behavior_hideable
vpbs/src/main/java/biz/laenger/android/vpbs/ViewPagerBottomSheetBehavior.java