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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 _get_authorization_headers(self) -> dict: """Constructs and returns the Authorization header for the client app. Args: None Returns: header dict for communicating with the authorization endpoints """

        auth = base64.encodestring((self.client_id + ':' + self.client_secret).encode('latin-1')).decode('latin-1')
        auth = auth.replace('\n', '').replace(' ', '')
        auth = 'Basic {}'.format(auth)
        headers = {'Authorization': auth}
        return headers