<BUG>public abstract void onBindParentViewHolder(PVH parentViewHolder, int parentPosition, Parent parent);public abstract void onBindChildViewHolder(CVH childViewHolder, int parentPosition,int childPosition, Object childListItem);</BUG><CONTEXT>public int getItemCount() {return mItems.size();}public abstract PVH onCreateParentViewHolder(ViewGroup parent, int parentType);public abstract CVH onCreateChildViewHolder(ViewGroup child, int childType);<extra_id_0>@Override</CONTEXT>
public abstract void onBindParentViewHolder(PVH parentViewHolder, int parentPosition, P parent);int childPosition, C child);