<com.pullups.PullUpView
  xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:app="http://schemas.android.com/apk/res-auto"
  android:layout_width="match_parent"
  android:layout_height="match_parent">

  <RelativeLayout
      android:id="@+id/contents"
      android:layout_gravity="center_horizontal"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      app:layout_behavior="com.pullups.ScrollableBottomSheetBehavior"/>

</com.pullups.PullUpView>