abstract public redirect ([mixed $location], [mixed $externalRedirect], [mixed $statusCode]) ..
abstract public setFileToSend (mixed $filePath, [mixed $attachmentName]) ...
abstract public sendHeaders () ...
abstract public setJsonContent (mixed $content) ...
abstract public setContentLength (mixed $contentLength) ...
abstract public appendContent (mixed $content) ...
abstract public getContent () ...
abstract public resetHeaders () ...
abstract public send () ...
abstract public setHeader (mixed $name, mixed $value) ...
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