public boolean isGhostHeader() {
            return false;
        }
SectioningAdapter
Represents a list of sections, each containing a list of items and optionally a header and or footer item.
SectioningAdapter may be used with a normal RecyclerView.LinearLayoutManager but is meant for use with
StickyHeaderLayoutManager to allow for sticky positioning of header items.
<p/>
When invalidating the adapter's contents NEVER use RecyclerView.Adapter.notify* methods. These methods
aren't aware of the section information and internal state of SectioningAdapter. As such, please
use the SectioningAdapter.notify* methods.
<p/>
SectioningAdapter manages four types of items: TYPE_HEADER, TYPE_ITEM, TYPE_FOOTER and TYPE_GHOST_HEADER.
Headers are the optional first item in a section. A section then has some number of items in it,
and an optional footer. The ghost header is a special item used for layout mechanics. It can
be ignored by SectioningAdapter subclasses - but it is made externally accessible just in case.
android/modules/module_common/src/main/java/github/tornaco/android/thanos/widget/section/SectioningAdapter.java