祝愿你我都会好好的 黄绮珊 专辑：祝愿你我都会好好的 语种：国语 本歌词于吾爱知道
I\'m trying to create a generic type that keeps a map of the versions of itself that have been created for later use. Effectively, it\'s an singleton pattern where there\'s one instance per type. The
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