The etag from data can never be a string #43
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Nyholm
approved these changes
Jul 31, 2017
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I don't think this key can ever produce anything other than a string, since it is set by
$response->getHeader('ETag')which is always of typestring[].Is this there for historical reasons perhaps? If so, instead of this PR, a comment should be added, similar to to the isset removal comment.