ingSink</a>&nbsp;hmacSha512(<a href="../../../../com/lark/oapi/okio/Sink.html" title="com.lark.oapi.okio中的接口">Sink</a>&nbsp;sink,
                                     <a href="../../../../com/lark/oapi/okio/ByteString.html" title="com.lark.oapi.okio中的类">ByteString</a>&nbsp;key)</pre>
<div class="block">Returns a sink that uses the SHA-512 HMAC algorithm to produce 512-bit hashes.</div>
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