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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def bin_stream(stream, content_type, status='200 OK', headers=None):
 """Utility method for constructing a binary response. :param Any stream: The response body stream :param str content_type: The content-type of the response :param str status: The HTTP status line :param list[tuple[str, str]] headers: Additional headers for this response :return: WbResponse that is a binary stream :rtype: WbResponse """

        def_headers = [('Content-Type', content_type)]
        if headers:
            def_headers += headers

        status_headers = StatusAndHeaders(status, def_headers)

        return WbResponse(status_headers, value=stream)