/guava/android/guava/src/com/google/common/collect/ImmutableList.java
return ( object == null ) ? -1 : Lists.lastIndexOfImpl ( this, object ) ;
@Override public int indexOf(@CheckForNull Object object) { return (object == null) ? -1 : Lists.indexOfImpl(this, object); } @Override public int lastIndexOf(@CheckForNull Object object) { <extra_id_0> } @Override public boolean contains(@CheckForNull Object object) { return indexOf(object) >= 0; } @Override