public final boolean isHeaderViewWillBeProvided() {
        return headerViewWillBeProvided;
    }
Return whether the header view is provided through {@link #getHeaderView(ViewGroup)}.
If false, the header view is inflated using the resource from
{@link #getHeaderResourceId()}.

@return whether the header view is provided through {@link #getHeaderView(ViewGroup)}.
library/src/main/java/io/github/luizgrp/sectionedrecyclerviewadapter/Section.java