Gets a member of the collection based on a unique string identifier.
根据唯一字符串标识符获取集合的成员。
Gets a specific member of the collection according to its index or a unique string identifier.
根据索引或唯一字符串标识符返回集合中的特定成员。
You need to assign a unique string identifier to each predefined validator that you use, as shown in the next steps
您需要向您所使用的每一个预定义确认器分配一个独一无二的字符串标识符，如下一步所示
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