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spring-framework/spring-web
Sam Brannen dfc435d045 Return previous value in UndertowHeadersAdapter's remove() method
Prior to this commit, UndertowHeadersAdapter's remove() method violated
the java.util.Map contract by always returning null.

This commit fixes this by returning the previous list stored under the
specified key, and otherwise returning null if no previous value was
present.

Closes gh-27592
2021-10-22 14:59:57 +02:00
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