I am new to firebase I am learning it like a toddler learning to walk. So far I have managed to send a message to my own phone using a token generated for my phone by firebase framework. Now here's where it gets tricky (in my opinion). There is a method called I am new to firebase I am learning it like a to
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firebase的应用令牌在什么时期发生变化以及如何管理它？
来源：互联网
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