@destprato2732
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return store.values().stream() .filter(member->member.getName().equals(name)); .findAny();return์ ์ ๋ ฅํ๊ฒ ๋๋ฉดRequired type: Optional Provided: Stream ์ด๋ฐ ์ค๋ฅ๋ ๋น๋๋ค ใ ใ ์ ์ด๋ด๊น์?
