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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 send_headers(self):
 """ Sends the headers to the client """

        self.events.sync_emit('headers')
        self._set_default_headers()
        header_str = self.status_line + self.EOL + str(self.headers)
        self.stream.write(header_str.encode())
        self.events.sync_emit('after_headers')