单振 2021-04-08 07:02 借条是借钱时所用，开发者_如何学JAVA用以证明某甲向某乙借了X元。欠条是借钱或没有还清全额款项时用，用以证明在开具欠条是某甲尚未支付某乙X元。收条和领条同意，用以证明某甲收到了某
Synopsis: Each User account has a UserProfile to hold extended info like phone numbers, addresses, etc. Then, a User account can have multiple Identities. There are multiple types of identities that h
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