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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 set_header(self, name: str, value: _HeaderTypes) -> None: """Sets the given response header name and value. All header values are converted to strings (`datetime` objects are formatted according to the HTTP specification for the ``Date`` header). """

        self._headers[name] = self._convert_header_value(value)