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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 detach_client(self, app):
 """ Detach the client that belongs to this CLI. """

        connection = self.get_connection()
        if connection:
            connection.detach_and_close()

        # Redraw all clients -> Maybe their size has to change.
        self.invalidate()