public RecyclerView.ViewHolder getLoadingViewHolder(final View view) {
        throw new UnsupportedOperationException(
                "You need to implement getLoadingViewHolder() if you set loadingResourceId");
    }
Return the ViewHolder for the Loading state of this Section.

@param view View inflated by resource returned by getItemResourceId
@return ViewHolder for the Loading state of this Section
library/src/main/java/io/github/luizgrp/sectionedrecyclerviewadapter/Section.java