与CoordinatorLayout的冲突

你好，
当我把CoordinatorLayout、AppBarLayout、PullRefreshLayout｛RecyclerView｝联合使用时，
下拉刷新的优先级是高于CoordinatorLayout里的beHavior的，所以滑上去再滑下来后，会出现上面的AppBarLayout中的内容还没有显示完全，就出现下来刷新了。
如果有需要的画我可以提供gif哈

Start by reproducing the interaction between CoordinatorLayout, AppBarLayout, PullRefreshLayout, and RecyclerView described in the issue, ideally with the reported scroll sequence. Then inspect how PullRefreshLayout prioritizes pull-to-refresh against the AppBarLayout behavior. Done means the AppBarLayout content is fully revealed before pull-to-refresh starts.

Written by the indexing model from the issue text.