def METHOD_NAME(self, x_var):
    """Showns activation
    Args:
         x_var: x variable
    """
    # logging reference image
    self.logger.experiment.add_image(
        "input",
        torch.Tensor.cpu(x_var[0][0]),
        self.current_epoch,
        dataformats="HW"
    )
    # logging layer 1 activations
    out = self.model_conv.conv1(x_var)
    c_grid = self.makegrid(out, 4)
    self.logger.experiment.add_image(
        "layer 1", c_grid, self.current_epoch, dataformats="HW"
    )