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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 write_handle(self, handle: int, value: bytes):
 """Write a handle to the device."""

        if not self.is_connected():
            raise BluetoothBackendException('Not connected to device!')
        self._device.char_write_handle(handle, value, True)
        return True