public int expand(@IntRange(from = 0) int position, boolean animate) {
        return expand(position, animate, true);
    }
Expand an expandable item

@param position position of the item, which includes the header layout count.
@param animate  expand items with animation
@return the number of items that have been added.
common/src/main/java/com/sxjs/common/base/baseadapter/BaseQuickAdapter.java