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我现在有个需求是需要让expandIcon紧跟在header的右侧,而不是在panel的最右边。所以添加了一个headerRender的props,类似于expandIcon,它可以接收整个panel的props并返回一个ReactNode以此来最大化用户的自由度。
如果加这个属性OK的话我之后给antd那边提个pr把属性给补充上